162412981 has 2 divisors, whose sum is σ = 162412982. Its totient is φ = 162412980.

The previous prime is 162412973. The next prime is 162413047. The reversal of 162412981 is 189214261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145323025 + 17089956 = 12055^2 + 4134^2 .

It is a cyclic number.

It is not a de Polignac number, because 162412981 - 2³ = 162412973 is a prime.

It is a super-2 number, since 2×162412981² = 52755952794612722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162412961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81206490 + 81206491.

It is an arithmetic number, because the mean of its divisors is an integer number (81206491).

Almost surely, 2^162412981 is an apocalyptic number.

It is an amenable number.

162412981 is a deficient number, since it is larger than the sum of its proper divisors (1).

162412981 is an equidigital number, since it uses as much as digits as its factorization.

162412981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 162412981 is about 12744.1351609279. The cubic root of 162412981 is about 545.5990170435.

The spelling of 162412981 in words is "one hundred sixty-two million, four hundred twelve thousand, nine hundred eighty-one".