161063957 has 2 divisors, whose sum is σ = 161063958. Its totient is φ = 161063956.

The previous prime is 161063891. The next prime is 161063983. The reversal of 161063957 is 759360161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160757041 + 306916 = 12679^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 161063957 - 2¹⁰ = 161062933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161063957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161063557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80531978 + 80531979.

It is an arithmetic number, because the mean of its divisors is an integer number (80531979).

Almost surely, 2^161063957 is an apocalyptic number.

It is an amenable number.

161063957 is a deficient number, since it is larger than the sum of its proper divisors (1).

161063957 is an equidigital number, since it uses as much as digits as its factorization.

161063957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 161063957 is about 12691.0975490696. The cubic root of 161063957 is about 544.0842090031.

The spelling of 161063957 in words is "one hundred sixty-one million, sixty-three thousand, nine hundred fifty-seven".