15389147197 has 2 divisors, whose sum is σ = 15389147198. Its totient is φ = 15389147196.

The previous prime is 15389147107. The next prime is 15389147227. The reversal of 15389147197 is 79174198351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11051475876 + 4337671321 = 105126^2 + 65861^2 .

It is a cyclic number.

It is not a de Polignac number, because 15389147197 - 2³¹ = 13241663549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15389147107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7694573598 + 7694573599.

It is an arithmetic number, because the mean of its divisors is an integer number (7694573599).

Almost surely, 2^15389147197 is an apocalyptic number.

It is an amenable number.

15389147197 is a deficient number, since it is larger than the sum of its proper divisors (1).

15389147197 is an equidigital number, since it uses as much as digits as its factorization.

15389147197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 55.

The spelling of 15389147197 in words is "fifteen billion, three hundred eighty-nine million, one hundred forty-seven thousand, one hundred ninety-seven".