161159039 has 2 divisors, whose sum is σ = 161159040. Its totient is φ = 161159038.

The previous prime is 161159029. The next prime is 161159051. The reversal of 161159039 is 930951161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161159039 - 2⁴ = 161159023 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 (161159029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80579519 + 80579520.

It is an arithmetic number, because the mean of its divisors is an integer number (80579520).

Almost surely, 2^161159039 is an apocalyptic number.

161159039 is a deficient number, since it is larger than the sum of its proper divisors (1).

161159039 is an equidigital number, since it uses as much as digits as its factorization.

161159039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 161159039 is about 12694.8430080880. The cubic root of 161159039 is about 544.1912522737.

The spelling of 161159039 in words is "one hundred sixty-one million, one hundred fifty-nine thousand, thirty-nine".