165043139 has 8 divisors (see below), whose sum is σ = 173922000. Its totient is φ = 156183552.

The previous prime is 165043133. The next prime is 165043169. The reversal of 165043139 is 931340561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165043139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165043133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14867 + ... + 23475.

It is an arithmetic number, because the mean of its divisors is an integer number (21740250).

Almost surely, 2^165043139 is an apocalyptic number.

165043139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

165043139 is a deficient number, since it is larger than the sum of its proper divisors (8878861).

165043139 is a wasteful number, since it uses less digits than its factorization.

165043139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9637.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 165043139 is about 12846.9116522221. The cubic root of 165043139 is about 548.5284508902.

The spelling of 165043139 in words is "one hundred sixty-five million, forty-three thousand, one hundred thirty-nine".