890405974194 has 64 divisors (see below), whose sum is σ = 2073753861120. Its totient is φ = 252018648000.

The previous prime is 890405974169. The next prime is 890405974273. The reversal of 890405974194 is 491479504098.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4911337 + ... + 5089404.

It is an arithmetic number, because the mean of its divisors is an integer number (32402404080).

Almost surely, 2^890405974194 is an apocalyptic number.

890405974194 is an abundant number, since it is smaller than the sum of its proper divisors (1183347886926).

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

890405974194 is a wasteful number, since it uses less digits than its factorization.

890405974194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000847.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 890405974194 in words is "eight hundred ninety billion, four hundred five million, nine hundred seventy-four thousand, one hundred ninety-four".