190981415 has 4 divisors (see below), whose sum is σ = 229177704. Its totient is φ = 152785128.

The previous prime is 190981393. The next prime is 190981429. The reversal of 190981415 is 514189091.

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 190981415 - 2⁸ = 190981159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19098137 + ... + 19098146.

It is an arithmetic number, because the mean of its divisors is an integer number (57294426).

Almost surely, 2^190981415 is an apocalyptic number.

190981415 is a deficient number, since it is larger than the sum of its proper divisors (38196289).

190981415 is an equidigital number, since it uses as much as digits as its factorization.

190981415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38196288.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 190981415 is about 13819.6025630262. The cubic root of 190981415 is about 575.8778424960.

The spelling of 190981415 in words is "one hundred ninety million, nine hundred eighty-one thousand, four hundred fifteen".