165158387 has 2 divisors, whose sum is σ = 165158388. Its totient is φ = 165158386.

The previous prime is 165158369. The next prime is 165158437. The reversal of 165158387 is 783851561.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165158387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165158327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82579193 + 82579194.

It is an arithmetic number, because the mean of its divisors is an integer number (82579194).

Almost surely, 2^165158387 is an apocalyptic number.

165158387 is a deficient number, since it is larger than the sum of its proper divisors (1).

165158387 is an equidigital number, since it uses as much as digits as its factorization.

165158387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 44.

The square root of 165158387 is about 12851.3963054604. The cubic root of 165158387 is about 548.6560985231.

The spelling of 165158387 in words is "one hundred sixty-five million, one hundred fifty-eight thousand, three hundred eighty-seven".