194090666882 has 54 divisors (see below), whose sum is σ = 341918258409. Its totient is φ = 82391074080.

The previous prime is 194090666857. The next prime is 194090666897. The reversal of 194090666882 is 288666090491.

It can be written as a sum of positive squares in 2 ways, for example, as 175126347361 + 18964319521 = 418481^2 + 137711^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=311521.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 833007038 + ... + 833007270.

Almost surely, 2^194090666882 is an apocalyptic number.

194090666882 is a deficient number, since it is larger than the sum of its proper divisors (147827591527).

194090666882 is an frugal number, since it uses more digits than its factorization.

194090666882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 59.

The spelling of 194090666882 in words is "one hundred ninety-four billion, ninety million, six hundred sixty-six thousand, eight hundred eighty-two".