194490664 has 16 divisors (see below), whose sum is σ = 365613300. Its totient is φ = 96993792.

The previous prime is 194490643. The next prime is 194490679. The reversal of 194490664 is 466094491.

194490664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 186322500 + 8168164 = 13650^2 + 2858^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 194490664.

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, 28137 + ... + 34360.

Almost surely, 2^194490664 is an apocalyptic number.

It is an amenable number.

194490664 is a deficient number, since it is larger than the sum of its proper divisors (171122636).

194490664 is a wasteful number, since it uses less digits than its factorization.

194490664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62892 (or 62888 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 194490664 is about 13945.9909651484. The cubic root of 194490664 is about 579.3836734845.

The spelling of 194490664 in words is "one hundred ninety-four million, four hundred ninety thousand, six hundred sixty-four".