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918000000 = 27335617
BaseRepresentation
bin110110101101111…
…001000110000000
32100222101020021000
4312231321012000
53340002000000
6231031532000
731514604561
oct6655710600
92328336230
10918000000
11431206a95
1221752a000
13118259688
1489cc4168
15558d5000
hex36b79180

918000000 has 448 divisors, whose sum is σ = 3585891600. Its totient is φ = 230400000.

The previous prime is 917999969. The next prime is 918000037. The reversal of 918000000 is 819.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 53999992 + ... + 54000008.

Almost surely, 2918000000 is an apocalyptic number.

918000000 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 918000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1792945800).

918000000 is an abundant number, since it is smaller than the sum of its proper divisors (2667891600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

918000000 is an frugal number, since it uses more digits than its factorization.

918000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 918000000 is about 30298.5148150862. The cubic root of 918000000 is about 971.8835403832.

Adding to 918000000 its reverse (819), we get a palindrome (918000819).

The spelling of 918000000 in words is "nine hundred eighteen million", and thus it is an aban number.