190090913 has 8 divisors (see below), whose sum is σ = 194024808. Its totient is φ = 186169984.

The previous prime is 190090903. The next prime is 190090921. The reversal of 190090913 is 319090091.

It can be written as a sum of positive squares in 4 ways, for example, as 16589329 + 173501584 = 4073^2 + 13172^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 190090913 - 2⁸ = 190090657 is a prime.

It is a super-2 number, since 2×190090913² = 72269110410347138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190090913.

It is not an unprimeable number, because it can be changed into a prime (190090903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29795 + ... + 35607.

It is an arithmetic number, because the mean of its divisors is an integer number (24253101).

Almost surely, 2^190090913 is an apocalyptic number.

It is an amenable number.

190090913 is a deficient number, since it is larger than the sum of its proper divisors (3933895).

190090913 is an equidigital number, since it uses as much as digits as its factorization.

190090913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6483.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 190090913 is about 13787.3461188149. The cubic root of 190090913 is about 574.9813861649.

The spelling of 190090913 in words is "one hundred ninety million, ninety thousand, nine hundred thirteen".