165912340 has 48 divisors (see below), whose sum is σ = 396627840. Its totient is φ = 57706880.

The previous prime is 165912323. The next prime is 165912349. The reversal of 165912340 is 43219561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165912349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11335 + ... + 21454.

It is an arithmetic number, because the mean of its divisors is an integer number (8263080).

Almost surely, 2^165912340 is an apocalyptic number.

165912340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165912340 is an abundant number, since it is smaller than the sum of its proper divisors (230715500).

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

165912340 is a wasteful number, since it uses less digits than its factorization.

165912340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32832 (or 32830 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 165912340 is about 12880.6964097443. The cubic root of 165912340 is about 549.4897085148.

The spelling of 165912340 in words is "one hundred sixty-five million, nine hundred twelve thousand, three hundred forty".