165040940 has 24 divisors (see below), whose sum is σ = 353127600. Its totient is φ = 64770368.

The previous prime is 165040927. The next prime is 165040961. The reversal of 165040940 is 49040561.

165040940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 76790 + ... + 78909.

It is an arithmetic number, because the mean of its divisors is an integer number (14713650).

Almost surely, 2^165040940 is an apocalyptic number.

165040940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165040940 is an abundant number, since it is smaller than the sum of its proper divisors (188086660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165040940 is a wasteful number, since it uses less digits than its factorization.

165040940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155761 (or 155759 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 165040940 is about 12846.8260671654. The cubic root of 165040940 is about 548.5260147203.

The spelling of 165040940 in words is "one hundred sixty-five million, forty thousand, nine hundred forty".