163161437 has 2 divisors, whose sum is σ = 163161438. Its totient is φ = 163161436.

The previous prime is 163161431. The next prime is 163161451. The reversal of 163161437 is 734161361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122124601 + 41036836 = 11051^2 + 6406^2 .

It is a cyclic number.

It is not a de Polignac number, because 163161437 - 2²⁶ = 96052573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163161431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81580718 + 81580719.

It is an arithmetic number, because the mean of its divisors is an integer number (81580719).

Almost surely, 2^163161437 is an apocalyptic number.

It is an amenable number.

163161437 is a deficient number, since it is larger than the sum of its proper divisors (1).

163161437 is an equidigital number, since it uses as much as digits as its factorization.

163161437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 163161437 is about 12773.4661310077. The cubic root of 163161437 is about 546.4358368029.

The spelling of 163161437 in words is "one hundred sixty-three million, one hundred sixty-one thousand, four hundred thirty-seven".