12163961 has 2 divisors, whose sum is σ = 12163962. Its totient is φ = 12163960.

The previous prime is 12163951. The next prime is 12163973. The reversal of 12163961 is 16936121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11868025 + 295936 = 3445^2 + 544^2 .

It is a cyclic number.

It is not a de Polignac number, because 12163961 - 2²² = 7969657 is a prime.

It is not a weakly prime, because it can be changed into another prime (12163951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6081980 + 6081981.

It is an arithmetic number, because the mean of its divisors is an integer number (6081981).

Almost surely, 2^12163961 is an apocalyptic number.

It is an amenable number.

12163961 is a deficient number, since it is larger than the sum of its proper divisors (1).

12163961 is an equidigital number, since it uses as much as digits as its factorization.

12163961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 12163961 is about 3487.6870559154. The cubic root of 12163961 is about 229.9808490671.

The spelling of 12163961 in words is "twelve million, one hundred sixty-three thousand, nine hundred sixty-one".