165041404 has 24 divisors (see below), whose sum is σ = 315439488. Its totient is φ = 74933040.

The previous prime is 165041363. The next prime is 165041431. The reversal of 165041404 is 404140561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52279 + ... + 55345.

It is an arithmetic number, because the mean of its divisors is an integer number (13143312).

Almost surely, 2^165041404 is an apocalyptic number.

It is an amenable number.

165041404 is a deficient number, since it is larger than the sum of its proper divisors (150398084).

165041404 is a wasteful number, since it uses less digits than its factorization.

165041404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4305 (or 4303 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 165041404 is about 12846.8441260879. The cubic root of 165041404 is about 548.5265287661.

Adding to 165041404 its reverse (404140561), we get a palindrome (569181965).

The spelling of 165041404 in words is "one hundred sixty-five million, forty-one thousand, four hundred four".