165644150 has 48 divisors (see below), whose sum is σ = 353248224. Its totient is φ = 56609280.

The previous prime is 165644123. The next prime is 165644159. The reversal of 165644150 is 51446561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165644159) 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, 151004 + ... + 152096.

It is an arithmetic number, because the mean of its divisors is an integer number (7359338).

Almost surely, 2^165644150 is an apocalyptic number.

165644150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165644150 is an abundant number, since it is smaller than the sum of its proper divisors (187604074).

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

165644150 is a wasteful number, since it uses less digits than its factorization.

165644150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545 (or 1540 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 165644150 is about 12870.2816596996. The cubic root of 165644150 is about 549.1934735256.

The spelling of 165644150 in words is "one hundred sixty-five million, six hundred forty-four thousand, one hundred fifty".