190642915 has 4 divisors (see below), whose sum is σ = 228771504. Its totient is φ = 152514328.

The previous prime is 190642871. The next prime is 190643027. The reversal of 190642915 is 519246091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 190642915 - 2¹⁹ = 190118627 is a prime.

It is a Duffinian number.

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, 19064287 + ... + 19064296.

It is an arithmetic number, because the mean of its divisors is an integer number (57192876).

Almost surely, 2^190642915 is an apocalyptic number.

190642915 is a deficient number, since it is larger than the sum of its proper divisors (38128589).

190642915 is an equidigital number, since it uses as much as digits as its factorization.

190642915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38128588.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 190642915 is about 13807.3500353978. The cubic root of 190642915 is about 575.5374080927.

The spelling of 190642915 in words is "one hundred ninety million, six hundred forty-two thousand, nine hundred fifteen".