194081564 has 6 divisors (see below), whose sum is σ = 339642744. Its totient is φ = 97040780.

The previous prime is 194081551. The next prime is 194081581. The reversal of 194081564 is 465180491.

194081564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24260192 + ... + 24260199.

It is an arithmetic number, because the mean of its divisors is an integer number (56607124).

Almost surely, 2^194081564 is an apocalyptic number.

It is an amenable number.

194081564 is a deficient number, since it is larger than the sum of its proper divisors (145561180).

194081564 is a wasteful number, since it uses less digits than its factorization.

194081564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48520395 (or 48520393 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 194081564 is about 13931.3159464567. The cubic root of 194081564 is about 578.9771548363.

The spelling of 194081564 in words is "one hundred ninety-four million, eighty-one thousand, five hundred sixty-four".