165840790 has 8 divisors (see below), whose sum is σ = 298513440. Its totient is φ = 66336312.

The previous prime is 165840781. The next prime is 165840823. The reversal of 165840790 is 97048561.

165840790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8292030 + ... + 8292049.

It is an arithmetic number, because the mean of its divisors is an integer number (37314180).

Almost surely, 2^165840790 is an apocalyptic number.

165840790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165840790 is a deficient number, since it is larger than the sum of its proper divisors (132672650).

165840790 is a wasteful number, since it uses less digits than its factorization.

165840790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16584086.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 165840790 is about 12877.9186982990. The cubic root of 165840790 is about 549.4107076768.

The spelling of 165840790 in words is "one hundred sixty-five million, eight hundred forty thousand, seven hundred ninety".