160791997 has 2 divisors, whose sum is σ = 160791998. Its totient is φ = 160791996.

The previous prime is 160791977. The next prime is 160792019. The reversal of 160791997 is 799197061.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97891236 + 62900761 = 9894^2 + 7931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160791997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 160791997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160791907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80395998 + 80395999.

It is an arithmetic number, because the mean of its divisors is an integer number (80395999).

Almost surely, 2^160791997 is an apocalyptic number.

It is an amenable number.

160791997 is a deficient number, since it is larger than the sum of its proper divisors (1).

160791997 is an equidigital number, since it uses as much as digits as its factorization.

160791997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214326, while the sum is 49.

The square root of 160791997 is about 12680.3784249525. The cubic root of 160791997 is about 543.7778038013. Note that the first 3 decimals are identical.

The spelling of 160791997 in words is "one hundred sixty million, seven hundred ninety-one thousand, nine hundred ninety-seven".