165150637 has 2 divisors, whose sum is σ = 165150638. Its totient is φ = 165150636.

The previous prime is 165150619. The next prime is 165150653. The reversal of 165150637 is 736051561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135349956 + 29800681 = 11634^2 + 5459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165150637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165154637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82575318 + 82575319.

It is an arithmetic number, because the mean of its divisors is an integer number (82575319).

Almost surely, 2^165150637 is an apocalyptic number.

It is an amenable number.

165150637 is a deficient number, since it is larger than the sum of its proper divisors (1).

165150637 is an equidigital number, since it uses as much as digits as its factorization.

165150637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 165150637 is about 12851.0947782669. The cubic root of 165150637 is about 548.6475165565.

The spelling of 165150637 in words is "one hundred sixty-five million, one hundred fifty thousand, six hundred thirty-seven".