194725864 has 16 divisors (see below), whose sum is σ = 365261220. Its totient is φ = 97322880.

The previous prime is 194725829. The next prime is 194725877. The reversal of 194725864 is 468527491.

It can be written as a sum of positive squares in 2 ways, for example, as 170302500 + 24423364 = 13050^2 + 4942^2 .

It is a super-2 number, since 2×194725864² = 75836324221092992, which contains 22 as substring.

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, 30294 + ... + 36154.

Almost surely, 2^194725864 is an apocalyptic number.

It is an amenable number.

194725864 is a deficient number, since it is larger than the sum of its proper divisors (170535356).

194725864 is a wasteful number, since it uses less digits than its factorization.

194725864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020 (or 10016 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 194725864 is about 13954.4209482157. The cubic root of 194725864 is about 579.6171313836.

The spelling of 194725864 in words is "one hundred ninety-four million, seven hundred twenty-five thousand, eight hundred sixty-four".