1240890318 has 24 divisors (see below), whose sum is σ = 2689328928. Its totient is φ = 413517312.

The previous prime is 1240890293. The next prime is 1240890341. The reversal of 1240890318 is 8130980421.

It is a super-2 number, since 2×1240890318² = 3079617562612282248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82971 + ... + 96777.

It is an arithmetic number, because the mean of its divisors is an integer number (112055372).

Almost surely, 2^1240890318 is an apocalyptic number.

1240890318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1240890318 is an abundant number, since it is smaller than the sum of its proper divisors (1448438610).

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

1240890318 is a wasteful number, since it uses less digits than its factorization.

1240890318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18808 (or 18805 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1240890318 is about 35226.2731210669. The cubic root of 1240890318 is about 1074.5941335700.

The spelling of 1240890318 in words is "one billion, two hundred forty million, eight hundred ninety thousand, three hundred eighteen".