190138089 has 4 divisors (see below), whose sum is σ = 253517456. Its totient is φ = 126758724.

The previous prime is 190138043. The next prime is 190138129. The reversal of 190138089 is 980831091.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 190138089 - 2²⁵ = 156583657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190138009) 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, 31689679 + ... + 31689684.

It is an arithmetic number, because the mean of its divisors is an integer number (63379364).

Almost surely, 2^190138089 is an apocalyptic number.

It is an amenable number.

190138089 is a deficient number, since it is larger than the sum of its proper divisors (63379367).

190138089 is an equidigital number, since it uses as much as digits as its factorization.

190138089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63379366.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 190138089 is about 13789.0568567977. The cubic root of 190138089 is about 575.0289477550.

The spelling of 190138089 in words is "one hundred ninety million, one hundred thirty-eight thousand, eighty-nine".