165345345 has 24 divisors (see below), whose sum is σ = 312653952. Its totient is φ = 80167200.

The previous prime is 165345331. The next prime is 165345359. The reversal of 165345345 is 543543561.

165345345 is a `hidden beast` number, since 165 + 3 + 453 + 45 = 666.

165345345 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 (165345331) and next prime (165345359).

It is not a de Polignac number, because 165345345 - 2⁷ = 165345217 is a prime.

It is a super-2 number, since 2×165345345² = 54678166226338050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166521 + ... + 167510.

It is an arithmetic number, because the mean of its divisors is an integer number (13027248).

Almost surely, 2^165345345 is an apocalyptic number.

165345345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165345345 is a deficient number, since it is larger than the sum of its proper divisors (147308607).

165345345 is a wasteful number, since it uses less digits than its factorization.

165345345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334053 (or 334050 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 165345345 is about 12858.6680881031. The cubic root of 165345345 is about 548.8630452569.

The spelling of 165345345 in words is "one hundred sixty-five million, three hundred forty-five thousand, three hundred forty-five".