16890087858 has 32 divisors (see below), whose sum is σ = 40284435456. Its totient is φ = 4615924368.

The previous prime is 16890087839. The next prime is 16890087869. The reversal of 16890087858 is 85878009861.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8741316 + ... + 8743247.

It is an arithmetic number, because the mean of its divisors is an integer number (1258888608).

Almost surely, 2^16890087858 is an apocalyptic number.

16890087858 is an abundant number, since it is smaller than the sum of its proper divisors (23394347598).

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

16890087858 is a wasteful number, since it uses less digits than its factorization.

16890087858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17484598.

The product of its (nonzero) digits is 7741440, while the sum is 60.

The spelling of 16890087858 in words is "sixteen billion, eight hundred ninety million, eighty-seven thousand, eight hundred fifty-eight".