162591983 has 2 divisors, whose sum is σ = 162591984. Its totient is φ = 162591982.

The previous prime is 162591973. The next prime is 162592021. The reversal of 162591983 is 389195261.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162591983 - 2⁴ = 162591967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162591943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81295991 + 81295992.

It is an arithmetic number, because the mean of its divisors is an integer number (81295992).

Almost surely, 2^162591983 is an apocalyptic number.

162591983 is a deficient number, since it is larger than the sum of its proper divisors (1).

162591983 is an equidigital number, since it uses as much as digits as its factorization.

162591983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 44.

The square root of 162591983 is about 12751.1561436601. The cubic root of 162591983 is about 545.7993857928.

The spelling of 162591983 in words is "one hundred sixty-two million, five hundred ninety-one thousand, nine hundred eighty-three".