165136800 has 144 divisors (see below), whose sum is σ = 544652640. Its totient is φ = 43453440.

The previous prime is 165136799. The next prime is 165136801. The reversal of 165136800 is 8631561.

165136800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165136799) and next prime (165136801).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (165136801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198786 + ... + 199614.

It is an arithmetic number, because the mean of its divisors is an integer number (3782310).

Almost surely, 2^165136800 is an apocalyptic number.

165136800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165136800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272326320).

165136800 is an abundant number, since it is smaller than the sum of its proper divisors (379515840).

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

165136800 is a wasteful number, since it uses less digits than its factorization.

165136800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 165136800 is about 12850.5564081872. The cubic root of 165136800 is about 548.6321934797.

The spelling of 165136800 in words is "one hundred sixty-five million, one hundred thirty-six thousand, eight hundred".