165102945 has 64 divisors (see below), whose sum is σ = 317952000. Its totient is φ = 71559936.

The previous prime is 165102943. The next prime is 165102961. The reversal of 165102945 is 549201561.

165102945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165102945 - 2¹ = 165102943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165102943) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 179196 + ... + 180114.

It is an arithmetic number, because the mean of its divisors is an integer number (4968000).

Almost surely, 2^165102945 is an apocalyptic number.

165102945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165102945 is a deficient number, since it is larger than the sum of its proper divisors (152849055).

165102945 is a wasteful number, since it uses less digits than its factorization.

165102945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 165102945 is about 12849.2390825294. The cubic root of 165102945 is about 548.5946988846.

The spelling of 165102945 in words is "one hundred sixty-five million, one hundred two thousand, nine hundred forty-five".