18258667040 has 24 divisors (see below), whose sum is σ = 43136101260. Its totient is φ = 7303466752.

The previous prime is 18258667027. The next prime is 18258667051. The reversal of 18258667040 is 4076685281.

It can be written as a sum of positive squares in 2 ways, for example, as 16197143824 + 2061523216 = 127268^2 + 45404^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57058175 + ... + 57058494.

Almost surely, 2^18258667040 is an apocalyptic number.

18258667040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18258667040 is an abundant number, since it is smaller than the sum of its proper divisors (24877434220).

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

18258667040 is a wasteful number, since it uses less digits than its factorization.

18258667040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114116684 (or 114116676 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 18258667040 in words is "eighteen billion, two hundred fifty-eight million, six hundred sixty-seven thousand, forty".