160518661 has 2 divisors, whose sum is σ = 160518662. Its totient is φ = 160518660.

The previous prime is 160518643. The next prime is 160518697. The reversal of 160518661 is 166815061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132365025 + 28153636 = 11505^2 + 5306^2 .

It is a cyclic number.

It is not a de Polignac number, because 160518661 - 2⁵ = 160518629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160518601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80259330 + 80259331.

It is an arithmetic number, because the mean of its divisors is an integer number (80259331).

Almost surely, 2^160518661 is an apocalyptic number.

It is an amenable number.

160518661 is a deficient number, since it is larger than the sum of its proper divisors (1).

160518661 is an equidigital number, since it uses as much as digits as its factorization.

160518661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 160518661 is about 12669.5959288369. The cubic root of 160518661 is about 543.4694999990.

The spelling of 160518661 in words is "one hundred sixty million, five hundred eighteen thousand, six hundred sixty-one".