161582963 has 2 divisors, whose sum is σ = 161582964. Its totient is φ = 161582962.

The previous prime is 161582951. The next prime is 161582999. The reversal of 161582963 is 369285161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161582963 - 2¹⁴ = 161566579 is a prime.

It is a super-2 number, since 2×161582963² = 52218107863718738, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161582963.

It is not a weakly prime, because it can be changed into another prime (161582923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80791481 + 80791482.

It is an arithmetic number, because the mean of its divisors is an integer number (80791482).

Almost surely, 2^161582963 is an apocalyptic number.

161582963 is a deficient number, since it is larger than the sum of its proper divisors (1).

161582963 is an equidigital number, since it uses as much as digits as its factorization.

161582963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 161582963 is about 12711.5287436248. The cubic root of 161582963 is about 544.6679940677.

The spelling of 161582963 in words is "one hundred sixty-one million, five hundred eighty-two thousand, nine hundred sixty-three".