165964027 has 2 divisors, whose sum is σ = 165964028. Its totient is φ = 165964026.

The previous prime is 165963989. The next prime is 165964037. The reversal of 165964027 is 720469561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165964027 - 2⁷ = 165963899 is a prime.

It is not a weakly prime, because it can be changed into another prime (165964037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82982013 + 82982014.

It is an arithmetic number, because the mean of its divisors is an integer number (82982014).

Almost surely, 2^165964027 is an apocalyptic number.

165964027 is a deficient number, since it is larger than the sum of its proper divisors (1).

165964027 is an equidigital number, since it uses as much as digits as its factorization.

165964027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 165964027 is about 12882.7026279426. The cubic root of 165964027 is about 549.5467637962.

The spelling of 165964027 in words is "one hundred sixty-five million, nine hundred sixty-four thousand, twenty-seven".