15191093227 has 2 divisors, whose sum is σ = 15191093228. Its totient is φ = 15191093226.

The previous prime is 15191093173. The next prime is 15191093243. The reversal of 15191093227 is 72239019151.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15191093227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15191093227.

It is not a weakly prime, because it can be changed into another prime (15191093527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7595546613 + 7595546614.

It is an arithmetic number, because the mean of its divisors is an integer number (7595546614).

Almost surely, 2^15191093227 is an apocalyptic number.

15191093227 is a deficient number, since it is larger than the sum of its proper divisors (1).

15191093227 is an equidigital number, since it uses as much as digits as its factorization.

15191093227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 15191093227 in words is "fifteen billion, one hundred ninety-one million, ninety-three thousand, two hundred twenty-seven".