165365426 has 16 divisors (see below), whose sum is σ = 265054680. Its totient is φ = 77103360.

The previous prime is 165365383. The next prime is 165365437. The reversal of 165365426 is 624563561.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 158734801 + 6630625 = 12599^2 + 2575^2 .

It is a super-2 number, since 2×165365426² = 54691448232322952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165365426.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18605 + ... + 26016.

Almost surely, 2^165365426 is an apocalyptic number.

165365426 is a deficient number, since it is larger than the sum of its proper divisors (99689254).

165365426 is a wasteful number, since it uses less digits than its factorization.

165365426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44749.

The product of its digits is 129600, while the sum is 38.

The square root of 165365426 is about 12859.4488995446. The cubic root of 165365426 is about 548.8852639505.

The spelling of 165365426 in words is "one hundred sixty-five million, three hundred sixty-five thousand, four hundred twenty-six".