165356433 has 24 divisors (see below), whose sum is σ = 275891616. Its totient is φ = 94320000.

The previous prime is 165356431. The next prime is 165356447. The reversal of 165356433 is 334653561.

165356433 is a `hidden beast` number, since 1 + 6 + 5 + 3 + 5 + 643 + 3 = 666.

165356433 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 165356433 - 2¹ = 165356431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165356431) 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, 47443 + ... + 50808.

It is an arithmetic number, because the mean of its divisors is an integer number (11495484).

Almost surely, 2^165356433 is an apocalyptic number.

It is an amenable number.

165356433 is a deficient number, since it is larger than the sum of its proper divisors (110535183).

165356433 is a wasteful number, since it uses less digits than its factorization.

165356433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98285 (or 98282 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

The square root of 165356433 is about 12859.0992297283. The cubic root of 165356433 is about 548.8753138362.

The spelling of 165356433 in words is "one hundred sixty-five million, three hundred fifty-six thousand, four hundred thirty-three".