190739091 has 4 divisors (see below), whose sum is σ = 254318792. Its totient is φ = 127159392.

The previous prime is 190739089. The next prime is 190739111. The reversal of 190739091 is 190937091.

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

It is not a de Polignac number, because 190739091 - 2¹ = 190739089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190739051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31789846 + ... + 31789851.

It is an arithmetic number, because the mean of its divisors is an integer number (63579698).

Almost surely, 2^190739091 is an apocalyptic number.

190739091 is a deficient number, since it is larger than the sum of its proper divisors (63579701).

190739091 is an equidigital number, since it uses as much as digits as its factorization.

190739091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63579700.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 190739091 is about 13810.8323789698. The cubic root of 190739091 is about 575.6341746579.

The spelling of 190739091 in words is "one hundred ninety million, seven hundred thirty-nine thousand, ninety-one".