165023330 has 16 divisors (see below), whose sum is σ = 305070840. Its totient is φ = 64225152.

The previous prime is 165023329. The next prime is 165023347. The reversal of 165023330 is 33320561.

It can be written as a sum of positive squares in 4 ways, for example, as 164531929 + 491401 = 12827^2 + 701^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165023296 and 165023305.

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 in 7 ways as a sum of consecutive naturals, for example, 222635 + ... + 223374.

Almost surely, 2^165023330 is an apocalyptic number.

165023330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165023330 is a deficient number, since it is larger than the sum of its proper divisors (140047510).

165023330 is a wasteful number, since it uses less digits than its factorization.

165023330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446053.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 165023330 is about 12846.1406655851. The cubic root of 165023330 is about 548.5065046385.

Adding to 165023330 its reverse (33320561), we get a palindrome (198343891).

The spelling of 165023330 in words is "one hundred sixty-five million, twenty-three thousand, three hundred thirty".