190915745 has 16 divisors (see below), whose sum is σ = 238287360. Its totient is φ = 146712384.

The previous prime is 190915741. The next prime is 190915759. The reversal of 190915745 is 547519091.

It is a cyclic number.

It is not a de Polignac number, because 190915745 - 2² = 190915741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (190915741) 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 in 15 ways as a sum of consecutive naturals, for example, 8084 + ... + 21146.

It is an arithmetic number, because the mean of its divisors is an integer number (14892960).

Almost surely, 2^190915745 is an apocalyptic number.

It is an amenable number.

190915745 is a deficient number, since it is larger than the sum of its proper divisors (47371615).

190915745 is a wasteful number, since it uses less digits than its factorization.

190915745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13184.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 190915745 is about 13817.2263859285. The cubic root of 190915745 is about 575.8118286845.

The spelling of 190915745 in words is "one hundred ninety million, nine hundred fifteen thousand, seven hundred forty-five".