16165181887 has 2 divisors, whose sum is σ = 16165181888. Its totient is φ = 16165181886.

The previous prime is 16165181861. The next prime is 16165181899. The reversal of 16165181887 is 78818156161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16165181887 - 2⁷ = 16165181759 is a prime.

It is a super-2 number, since 2×16165181887² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16165188887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8082590943 + 8082590944.

It is an arithmetic number, because the mean of its divisors is an integer number (8082590944).

Almost surely, 2^16165181887 is an apocalyptic number.

16165181887 is a deficient number, since it is larger than the sum of its proper divisors (1).

16165181887 is an equidigital number, since it uses as much as digits as its factorization.

16165181887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 52.

The spelling of 16165181887 in words is "sixteen billion, one hundred sixty-five million, one hundred eighty-one thousand, eight hundred eighty-seven".