165373965 has 24 divisors (see below), whose sum is σ = 292750848. Its totient is φ = 86321760.

The previous prime is 165373961. The next prime is 165373969. The reversal of 165373965 is 569373561.

165373965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165373961) and next prime (165373969).

It is not a de Polignac number, because 165373965 - 2² = 165373961 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 165373965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165373961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36981 + ... + 41210.

It is an arithmetic number, because the mean of its divisors is an integer number (12197952).

Almost surely, 2^165373965 is an apocalyptic number.

165373965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165373965 is a deficient number, since it is larger than the sum of its proper divisors (127376883).

165373965 is a wasteful number, since it uses less digits than its factorization.

165373965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78249 (or 78246 counting only the distinct ones).

The product of its digits is 510300, while the sum is 45.

The square root of 165373965 is about 12859.7809079315. The cubic root of 165373965 is about 548.8947114122.

It can be divided in two parts, 16537 and 3965, that added together give a palindrome (20502).

The spelling of 165373965 in words is "one hundred sixty-five million, three hundred seventy-three thousand, nine hundred sixty-five".