162149081 has 2 divisors, whose sum is σ = 162149082. Its totient is φ = 162149080.

The previous prime is 162149047. The next prime is 162149123. The reversal of 162149081 is 180941261.

162149081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151683856 + 10465225 = 12316^2 + 3235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162149081 is a prime.

It is a super-2 number, since 2×162149081² = 52584648938289122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (162149681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81074540 + 81074541.

It is an arithmetic number, because the mean of its divisors is an integer number (81074541).

Almost surely, 2^162149081 is an apocalyptic number.

It is an amenable number.

162149081 is a deficient number, since it is larger than the sum of its proper divisors (1).

162149081 is an equidigital number, since it uses as much as digits as its factorization.

162149081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 162149081 is about 12733.7771694026. Note that the first 3 decimals coincide. The cubic root of 162149081 is about 545.3033476640.

The spelling of 162149081 in words is "one hundred sixty-two million, one hundred forty-nine thousand, eighty-one".