18707006858 has 16 divisors (see below), whose sum is σ = 29039375880. Its totient is φ = 9027465216.

The previous prime is 18707006821. The next prime is 18707006861. The reversal of 18707006858 is 85860070781.

It can be written as a sum of positive squares in 4 ways, for example, as 12806769889 + 5900236969 = 113167^2 + 76813^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91466 + ... + 213962.

Almost surely, 2^18707006858 is an apocalyptic number.

18707006858 is a deficient number, since it is larger than the sum of its proper divisors (10332369022).

18707006858 is a wasteful number, since it uses less digits than its factorization.

18707006858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125161.

The product of its (nonzero) digits is 752640, while the sum is 50.

The spelling of 18707006858 in words is "eighteen billion, seven hundred seven million, six thousand, eight hundred fifty-eight".