165802812 has 48 divisors (see below), whose sum is σ = 446541312. Its totient is φ = 46900800.

The previous prime is 165802807. The next prime is 165802829. The reversal of 165802812 is 218208561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1288 + ... + 18255.

It is an arithmetic number, because the mean of its divisors is an integer number (9302944).

Almost surely, 2^165802812 is an apocalyptic number.

165802812 is a gapful number since it is divisible by the number (12) 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 165802812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223270656).

165802812 is an abundant number, since it is smaller than the sum of its proper divisors (280738500).

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

165802812 is a wasteful number, since it uses less digits than its factorization.

165802812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19658 (or 19656 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 165802812 is about 12876.4440743553. Note that the first 3 decimals coincide. The cubic root of 165802812 is about 549.3687656173.

The spelling of 165802812 in words is "one hundred sixty-five million, eight hundred two thousand, eight hundred twelve".