165786160 has 20 divisors (see below), whose sum is σ = 385453008. Its totient is φ = 66314432.

The previous prime is 165786143. The next prime is 165786163. The reversal of 165786160 is 61687561.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (165786163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036084 + ... + 1036243.

Almost surely, 2^165786160 is an apocalyptic number.

165786160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165786160 is an abundant number, since it is smaller than the sum of its proper divisors (219666848).

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

165786160 is a wasteful number, since it uses less digits than its factorization.

165786160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072340 (or 2072334 counting only the distinct ones).

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

The square root of 165786160 is about 12875.7974510319. The cubic root of 165786160 is about 549.3503734987.

The spelling of 165786160 in words is "one hundred sixty-five million, seven hundred eighty-six thousand, one hundred sixty".