1018140840 has 384 divisors, whose sum is σ = 3734640000. Its totient is φ = 248583168.

The previous prime is 1018140817. The next prime is 1018140913. The reversal of 1018140840 is 480418101.

It is a super-2 number, since 2×1018140840² = 2073221540151811200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6833086 + ... + 6833234.

It is an arithmetic number, because the mean of its divisors is an integer number (9725625).

Almost surely, 2^1018140840 is an apocalyptic number.

1018140840 is a gapful number since it is divisible by the number (10) 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 1018140840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867320000).

1018140840 is an abundant number, since it is smaller than the sum of its proper divisors (2716499160).

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

1018140840 is a wasteful number, since it uses less digits than its factorization.

1018140840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 1018140840 is about 31908.3192913698. The cubic root of 1018140840 is about 1006.0107452210.

Adding to 1018140840 its reverse (480418101), we get a palindrome (1498558941).

The spelling of 1018140840 in words is "one billion, eighteen million, one hundred forty thousand, eight hundred forty".