160638857 has 2 divisors, whose sum is σ = 160638858. Its totient is φ = 160638856.

The previous prime is 160638853. The next prime is 160638883. The reversal of 160638857 is 758836061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116229961 + 44408896 = 10781^2 + 6664^2 .

It is an emirp because it is prime and its reverse (758836061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 160638857 - 2² = 160638853 is a prime.

It is not a weakly prime, because it can be changed into another prime (160638851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80319428 + 80319429.

It is an arithmetic number, because the mean of its divisors is an integer number (80319429).

Almost surely, 2^160638857 is an apocalyptic number.

It is an amenable number.

160638857 is a deficient number, since it is larger than the sum of its proper divisors (1).

160638857 is an equidigital number, since it uses as much as digits as its factorization.

160638857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 160638857 is about 12674.3385231735. The cubic root of 160638857 is about 543.6051157209.

The spelling of 160638857 in words is "one hundred sixty million, six hundred thirty-eight thousand, eight hundred fifty-seven".