161478959 has 2 divisors, whose sum is σ = 161478960. Its totient is φ = 161478958.

The previous prime is 161478953. The next prime is 161478991. The reversal of 161478959 is 959874161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161478959 - 2¹⁶ = 161413423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161478953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80739479 + 80739480.

It is an arithmetic number, because the mean of its divisors is an integer number (80739480).

Almost surely, 2^161478959 is an apocalyptic number.

161478959 is a deficient number, since it is larger than the sum of its proper divisors (1).

161478959 is an equidigital number, since it uses as much as digits as its factorization.

161478959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 50.

The square root of 161478959 is about 12707.4371531005. The cubic root of 161478959 is about 544.5511092031.

The spelling of 161478959 in words is "one hundred sixty-one million, four hundred seventy-eight thousand, nine hundred fifty-nine".