161203079 has 2 divisors, whose sum is σ = 161203080. Its totient is φ = 161203078.

The previous prime is 161203073. The next prime is 161203093. The reversal of 161203079 is 970302161.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161203079 is a prime.

It is a Sophie Germain 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 (161203073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80601539 + 80601540.

It is an arithmetic number, because the mean of its divisors is an integer number (80601540).

Almost surely, 2^161203079 is an apocalyptic number.

161203079 is a deficient number, since it is larger than the sum of its proper divisors (1).

161203079 is an equidigital number, since it uses as much as digits as its factorization.

161203079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 161203079 is about 12696.5774522113. The cubic root of 161203079 is about 544.2408182183.

The spelling of 161203079 in words is "one hundred sixty-one million, two hundred three thousand, seventy-nine".