15195214091 has 4 divisors (see below), whose sum is σ = 16089050232. Its totient is φ = 14301377952.

The previous prime is 15195214061. The next prime is 15195214123. The reversal of 15195214091 is 19041259151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19041259151 = 107 ⋅177955693.

It is a cyclic number.

It is not a de Polignac number, because 15195214091 - 2¹⁰ = 15195213067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15195214061) 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, 446918045 + ... + 446918078.

It is an arithmetic number, because the mean of its divisors is an integer number (4022262558).

Almost surely, 2^15195214091 is an apocalyptic number.

15195214091 is a deficient number, since it is larger than the sum of its proper divisors (893836141).

15195214091 is an equidigital number, since it uses as much as digits as its factorization.

15195214091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893836140.

The product of its (nonzero) digits is 16200, while the sum is 38.

The spelling of 15195214091 in words is "fifteen billion, one hundred ninety-five million, two hundred fourteen thousand, ninety-one".