165653130 has 64 divisors (see below), whose sum is σ = 419136768. Its totient is φ = 41817600.

The previous prime is 165653129. The next prime is 165653183. The reversal of 165653130 is 31356561.

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

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, 68502 + ... + 70878.

It is an arithmetic number, because the mean of its divisors is an integer number (6549012).

Almost surely, 2^165653130 is an apocalyptic number.

165653130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 165653130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209568384).

165653130 is an abundant number, since it is smaller than the sum of its proper divisors (253483638).

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

165653130 is a wasteful number, since it uses less digits than its factorization.

165653130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 165653130 is about 12870.6305206855. The cubic root of 165653130 is about 549.2033977482.

It can be divided in two parts, 1656531 and 30, that added together give a palindrome (1656561).

The spelling of 165653130 in words is "one hundred sixty-five million, six hundred fifty-three thousand, one hundred thirty".