194490564 has 24 divisors (see below), whose sum is σ = 455457408. Its totient is φ = 64595040.

The previous prime is 194490547. The next prime is 194490577. The reversal of 194490564 is 465094491.

194490564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25932 + ... + 32579.

It is an arithmetic number, because the mean of its divisors is an integer number (18977392).

Almost surely, 2^194490564 is an apocalyptic number.

It is an amenable number.

194490564 is an abundant number, since it is smaller than the sum of its proper divisors (260966844).

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

194490564 is a wasteful number, since it uses less digits than its factorization.

194490564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58795 (or 58793 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 194490564 is about 13945.9873798882. The cubic root of 194490564 is about 579.3835741852.

The spelling of 194490564 in words is "one hundred ninety-four million, four hundred ninety thousand, five hundred sixty-four".