162561983 has 2 divisors, whose sum is σ = 162561984. Its totient is φ = 162561982.

The previous prime is 162561977. The next prime is 162561989. The reversal of 162561983 is 389165261.

It is a balanced prime because it is at equal distance from previous prime (162561977) and next prime (162561989).

It is a cyclic number.

It is not a de Polignac number, because 162561983 - 2⁸ = 162561727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162561983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162561989) 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, 81280991 + 81280992.

It is an arithmetic number, because the mean of its divisors is an integer number (81280992).

Almost surely, 2^162561983 is an apocalyptic number.

162561983 is a deficient number, since it is larger than the sum of its proper divisors (1).

162561983 is an equidigital number, since it uses as much as digits as its factorization.

162561983 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 162561983 is about 12749.9797254741. The cubic root of 162561983 is about 545.7658150750.

The spelling of 162561983 in words is "one hundred sixty-two million, five hundred sixty-one thousand, nine hundred eighty-three".