165190749 has 8 divisors (see below), whose sum is σ = 220314432. Its totient is φ = 110097120.

The previous prime is 165190741. The next prime is 165190783. The reversal of 165190749 is 947091561.

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

It is not a de Polignac number, because 165190749 - 2³ = 165190741 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 165190749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165190741) 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, 14689 + ... + 23369.

It is an arithmetic number, because the mean of its divisors is an integer number (27539304).

Almost surely, 2^165190749 is an apocalyptic number.

It is an amenable number.

165190749 is a deficient number, since it is larger than the sum of its proper divisors (55123683).

165190749 is an equidigital number, since it uses as much as digits as its factorization.

165190749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15027.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 165190749 is about 12852.6553287638. The cubic root of 165190749 is about 548.6919317000.

The spelling of 165190749 in words is "one hundred sixty-five million, one hundred ninety thousand, seven hundred forty-nine".