165963336 has 128 divisors (see below), whose sum is σ = 534159360. Its totient is φ = 41702400.

The previous prime is 165963311. The next prime is 165963353. The reversal of 165963336 is 633369561.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55840 + ... + 58736.

It is an arithmetic number, because the mean of its divisors is an integer number (4173120).

Almost surely, 2^165963336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165963336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267079680).

165963336 is an abundant number, since it is smaller than the sum of its proper divisors (368196024).

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

165963336 is a wasteful number, since it uses less digits than its factorization.

165963336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955 (or 2951 counting only the distinct ones).

The product of its digits is 262440, while the sum is 42.

The square root of 165963336 is about 12882.6758090080. The cubic root of 165963336 is about 549.5460011062.

The spelling of 165963336 in words is "one hundred sixty-five million, nine hundred sixty-three thousand, three hundred thirty-six".