190864456 has 8 divisors (see below), whose sum is σ = 357870870. Its totient is φ = 95432224.

The previous prime is 190864451. The next prime is 190864477. The reversal of 190864456 is 654468091.

It can be written as a sum of positive squares in only one way, i.e., 127916100 + 62948356 = 11310^2 + 7934^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (190864451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11929021 + ... + 11929036.

Almost surely, 2^190864456 is an apocalyptic number.

It is an amenable number.

190864456 is a deficient number, since it is larger than the sum of its proper divisors (167006414).

190864456 is a wasteful number, since it uses less digits than its factorization.

190864456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23858063 (or 23858059 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 190864456 is about 13815.3702809588. The cubic root of 190864456 is about 575.7602606347.

The spelling of 190864456 in words is "one hundred ninety million, eight hundred sixty-four thousand, four hundred fifty-six".