15973231019 has 2 divisors, whose sum is σ = 15973231020. Its totient is φ = 15973231018.

The previous prime is 15973231003. The next prime is 15973231033. The reversal of 15973231019 is 91013237951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15973231019 - 2⁴ = 15973231003 is a prime.

It is a super-2 number, since 2×15973231019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15973261019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7986615509 + 7986615510.

It is an arithmetic number, because the mean of its divisors is an integer number (7986615510).

Almost surely, 2^15973231019 is an apocalyptic number.

15973231019 is a deficient number, since it is larger than the sum of its proper divisors (1).

15973231019 is an equidigital number, since it uses as much as digits as its factorization.

15973231019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 41.

The spelling of 15973231019 in words is "fifteen billion, nine hundred seventy-three million, two hundred thirty-one thousand, nineteen".