15916963 has 2 divisors, whose sum is σ = 15916964. Its totient is φ = 15916962.

The previous prime is 15916949. The next prime is 15917017. The reversal of 15916963 is 36961951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15916963 - 2⁵ = 15916931 is a prime.

It is a super-2 number, since 2×15916963² = 506699422286738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15916933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7958481 + 7958482.

It is an arithmetic number, because the mean of its divisors is an integer number (7958482).

Almost surely, 2^15916963 is an apocalyptic number.

15916963 is a deficient number, since it is larger than the sum of its proper divisors (1).

15916963 is an equidigital number, since it uses as much as digits as its factorization.

15916963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 40.

The square root of 15916963 is about 3989.6068728635. The cubic root of 15916963 is about 251.5475367539.

The spelling of 15916963 in words is "fifteen million, nine hundred sixteen thousand, nine hundred sixty-three".