194005664 has 24 divisors (see below), whose sum is σ = 382383540. Its totient is φ = 96892416.

The previous prime is 194005661. The next prime is 194005673. The reversal of 194005664 is 466500491.

It can be written as a sum of positive squares in 2 ways, for example, as 193210000 + 795664 = 13900^2 + 892^2 .

It is not an unprimeable number, because it can be changed into a prime (194005661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30122 + ... + 35990.

Almost surely, 2^194005664 is an apocalyptic number.

It is an amenable number.

194005664 is a deficient number, since it is larger than the sum of its proper divisors (188377876).

194005664 is a wasteful number, since it uses less digits than its factorization.

194005664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6912 (or 6904 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 194005664 is about 13928.5916014506. The cubic root of 194005664 is about 578.9016709438.

The spelling of 194005664 in words is "one hundred ninety-four million, five thousand, six hundred sixty-four".