165346452 has 18 divisors (see below), whose sum is σ = 417959178. Its totient is φ = 55115472.

The previous prime is 165346397. The next prime is 165346483. The reversal of 165346452 is 254643561.

165346452 is a `hidden beast` number, since 1 + 6 + 5 + 3 + 4 + 645 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 131194116 + 34152336 = 11454^2 + 5844^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4592957 = 165346452 / (1 + 6 + 5 + 3 + 4 + 6 + 4 + 5 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2296443 + ... + 2296514.

Almost surely, 2^165346452 is an apocalyptic number.

165346452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165346452 is an abundant number, since it is smaller than the sum of its proper divisors (252612726).

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

165346452 is a wasteful number, since it uses less digits than its factorization.

165346452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592967 (or 4592962 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 165346452 is about 12858.7111329246. The cubic root of 165346452 is about 548.8642701478.

The spelling of 165346452 in words is "one hundred sixty-five million, three hundred forty-six thousand, four hundred fifty-two".