165628369 has 4 divisors (see below), whose sum is σ = 166820080. Its totient is φ = 164436660.

The previous prime is 165628363. The next prime is 165628387. The reversal of 165628369 is 963826561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165628369 - 2³ = 165628361 is a prime.

It is a super-2 number, since 2×165628369² = 54865513235200322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165628361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595647 + ... + 595924.

It is an arithmetic number, because the mean of its divisors is an integer number (41705020).

Almost surely, 2^165628369 is an apocalyptic number.

It is an amenable number.

165628369 is a deficient number, since it is larger than the sum of its proper divisors (1191711).

165628369 is a wasteful number, since it uses less digits than its factorization.

165628369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191710.

The product of its digits is 466560, while the sum is 46.

The square root of 165628369 is about 12869.6685660510. The cubic root of 165628369 is about 549.1760323272.

The spelling of 165628369 in words is "one hundred sixty-five million, six hundred twenty-eight thousand, three hundred sixty-nine".