165387938887 has 2 divisors, whose sum is σ = 165387938888. Its totient is φ = 165387938886.

The previous prime is 165387938867. The next prime is 165387939007. The reversal of 165387938887 is 788839783561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165387938887 - 2¹⁵ = 165387906119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165387938867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82693969443 + 82693969444.

It is an arithmetic number, because the mean of its divisors is an integer number (82693969444).

Almost surely, 2^165387938887 is an apocalyptic number.

165387938887 is a deficient number, since it is larger than the sum of its proper divisors (1).

165387938887 is an equidigital number, since it uses as much as digits as its factorization.

165387938887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 487710720, while the sum is 73.

The spelling of 165387938887 in words is "one hundred sixty-five billion, three hundred eighty-seven million, nine hundred thirty-eight thousand, eight hundred eighty-seven".