194996253864 has 16 divisors (see below), whose sum is σ = 487490634720. Its totient is φ = 64998751280.

The previous prime is 194996253821. The next prime is 194996253941. The reversal of 194996253864 is 468352699491.

It is a junction number, because it is equal to n+sod(n) for n = 194996253795 and 194996253804.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4062421932 + ... + 4062421979.

It is an arithmetic number, because the mean of its divisors is an integer number (30468164670).

Almost surely, 2^194996253864 is an apocalyptic number.

It is an amenable number.

194996253864 is an abundant number, since it is smaller than the sum of its proper divisors (292494380856).

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

194996253864 is a wasteful number, since it uses less digits than its factorization.

194996253864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8124843920 (or 8124843916 counting only the distinct ones).

The product of its digits is 100776960, while the sum is 66.

The spelling of 194996253864 in words is "one hundred ninety-four billion, nine hundred ninety-six million, two hundred fifty-three thousand, eight hundred sixty-four".