165342649 has 2 divisors, whose sum is σ = 165342650. Its totient is φ = 165342648.

The previous prime is 165342631. The next prime is 165342679. The reversal of 165342649 is 946243561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126405049 + 38937600 = 11243^2 + 6240^2 .

It is a cyclic number.

It is not a de Polignac number, because 165342649 - 2¹³ = 165334457 is a prime.

It is not a weakly prime, because it can be changed into another prime (165342679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82671324 + 82671325.

It is an arithmetic number, because the mean of its divisors is an integer number (82671325).

Almost surely, 2^165342649 is an apocalyptic number.

It is an amenable number.

165342649 is a deficient number, since it is larger than the sum of its proper divisors (1).

165342649 is an equidigital number, since it uses as much as digits as its factorization.

165342649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 40.

The square root of 165342649 is about 12858.5632556674. The cubic root of 165342649 is about 548.8600621212.

The spelling of 165342649 in words is "one hundred sixty-five million, three hundred forty-two thousand, six hundred forty-nine".