165323426 has 4 divisors (see below), whose sum is σ = 247985142. Its totient is φ = 82661712.

The previous prime is 165323413. The next prime is 165323443. The reversal of 165323426 is 624323561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 160909225 + 4414201 = 12685^2 + 2101^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165323392 and 165323401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41330855 + ... + 41330858.

Almost surely, 2^165323426 is an apocalyptic number.

165323426 is a deficient number, since it is larger than the sum of its proper divisors (82661716).

165323426 is an equidigital number, since it uses as much as digits as its factorization.

165323426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82661715.

The product of its digits is 25920, while the sum is 32.

The square root of 165323426 is about 12857.8157554073. The cubic root of 165323426 is about 548.8387908482.

Adding to 165323426 its reverse (624323561), we get a palindrome (789646987).

The spelling of 165323426 in words is "one hundred sixty-five million, three hundred twenty-three thousand, four hundred twenty-six".