918006140 has 48 divisors (see below), whose sum is σ = 1982386560. Its totient is φ = 356892480.

The previous prime is 918006139. The next prime is 918006191. The reversal of 918006140 is 41600819.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178931 + ... + 183989.

It is an arithmetic number, because the mean of its divisors is an integer number (41299720).

Almost surely, 2^918006140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 918006140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991193280).

918006140 is an abundant number, since it is smaller than the sum of its proper divisors (1064380420).

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

918006140 is a wasteful number, since it uses less digits than its factorization.

918006140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322 (or 5320 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 918006140 is about 30298.6161400154. The cubic root of 918006140 is about 971.8857071776.

Adding to 918006140 its reverse (41600819), we get a palindrome (959606959).

The spelling of 918006140 in words is "nine hundred eighteen million, six thousand, one hundred forty".