165393450 has 36 divisors (see below), whose sum is σ = 444358278. Its totient is φ = 44104800.

The previous prime is 165393433. The next prime is 165393451. The reversal of 165393450 is 54393561.

It can be written as a sum of positive squares in 3 ways, for example, as 100220121 + 65173329 = 10011^2 + 8073^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (165393451) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 183321 + ... + 184220.

Almost surely, 2^165393450 is an apocalyptic number.

165393450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165393450 is an abundant number, since it is smaller than the sum of its proper divisors (278964828).

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

165393450 is a wasteful number, since it uses less digits than its factorization.

165393450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367559 (or 367551 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 165393450 is about 12860.5384801726. The cubic root of 165393450 is about 548.9162681980.

The spelling of 165393450 in words is "one hundred sixty-five million, three hundred ninety-three thousand, four hundred fifty".