165104999 has 2 divisors, whose sum is σ = 165105000. Its totient is φ = 165104998.

The previous prime is 165104957. The next prime is 165105043. The reversal of 165104999 is 999401561.

It is an a-pointer prime, because the next prime (165105043) can be obtained adding 165104999 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165104999 - 2¹⁶ = 165039463 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165104939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82552499 + 82552500.

It is an arithmetic number, because the mean of its divisors is an integer number (82552500).

Almost surely, 2^165104999 is an apocalyptic number.

165104999 is a deficient number, since it is larger than the sum of its proper divisors (1).

165104999 is an equidigital number, since it uses as much as digits as its factorization.

165104999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 165104999 is about 12849.3190091927. The cubic root of 165104999 is about 548.5969738467.

It can be divided in two parts, 16 and 5104999, that added together give a palindrome (5105015).

The spelling of 165104999 in words is "one hundred sixty-five million, one hundred four thousand, nine hundred ninety-nine".