15830742391 has 2 divisors, whose sum is σ = 15830742392. Its totient is φ = 15830742390.

The previous prime is 15830742371. The next prime is 15830742457. The reversal of 15830742391 is 19324703851.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15830742391 - 2⁵ = 15830742359 is a prime.

It is a super-2 number, since 2×15830742391² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15830742311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7915371195 + 7915371196.

It is an arithmetic number, because the mean of its divisors is an integer number (7915371196).

Almost surely, 2^15830742391 is an apocalyptic number.

15830742391 is a deficient number, since it is larger than the sum of its proper divisors (1).

15830742391 is an equidigital number, since it uses as much as digits as its factorization.

15830742391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 15830742391 in words is "fifteen billion, eight hundred thirty million, seven hundred forty-two thousand, three hundred ninety-one".