190409275149 has 16 divisors (see below), whose sum is σ = 273885043392. Its totient is φ = 117218286848.

The previous prime is 190409275123. The next prime is 190409275153. The reversal of 190409275149 is 941572904091.

It is not a de Polignac number, because 190409275149 - 2²⁰ = 190408226573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190409275159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35219139 + ... + 35224544.

It is an arithmetic number, because the mean of its divisors is an integer number (17117815212).

Almost surely, 2^190409275149 is an apocalyptic number.

It is an amenable number.

190409275149 is a deficient number, since it is larger than the sum of its proper divisors (83475768243).

190409275149 is a wasteful number, since it uses less digits than its factorization.

190409275149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70443756.

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 190409275149 in words is "one hundred ninety billion, four hundred nine million, two hundred seventy-five thousand, one hundred forty-nine".