190664078 has 16 divisors (see below), whose sum is σ = 330349104. Its totient is φ = 81567360.

The previous prime is 190664059. The next prime is 190664083. The reversal of 190664078 is 870466091.

It is a congruent number.

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, 254525 + ... + 255272.

It is an arithmetic number, because the mean of its divisors is an integer number (20646819).

Almost surely, 2^190664078 is an apocalyptic number.

190664078 is a deficient number, since it is larger than the sum of its proper divisors (139685026).

190664078 is a wasteful number, since it uses less digits than its factorization.

190664078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509827.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 190664078 is about 13808.1163813172. The cubic root of 190664078 is about 575.5587038356.

The spelling of 190664078 in words is "one hundred ninety million, six hundred sixty-four thousand, seventy-eight".