187813312858 has 16 divisors (see below), whose sum is σ = 286691375520. Its totient is φ = 92257037136.

The previous prime is 187813312747. The next prime is 187813312873. The reversal of 187813312858 is 858213318781.

It is a junction number, because it is equal to n+sod(n) for n = 187813312799 and 187813312808.

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, 1828828 + ... + 1928791.

It is an arithmetic number, because the mean of its divisors is an integer number (17918210970).

Almost surely, 2^187813312858 is an apocalyptic number.

187813312858 is a deficient number, since it is larger than the sum of its proper divisors (98878062662).

187813312858 is a wasteful number, since it uses less digits than its factorization.

187813312858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3758061.

The product of its digits is 2580480, while the sum is 55.

The spelling of 187813312858 in words is "one hundred eighty-seven billion, eight hundred thirteen million, three hundred twelve thousand, eight hundred fifty-eight".