165126650 has 24 divisors (see below), whose sum is σ = 330762684. Its totient is φ = 60969600.

The previous prime is 165126649. The next prime is 165126653. The reversal of 165126650 is 56621561.

It can be written as a sum of positive squares in 6 ways, for example, as 90079081 + 75047569 = 9491^2 + 8663^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (165126653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126371 + ... + 127670.

Almost surely, 2^165126650 is an apocalyptic number.

165126650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165126650 is an abundant number, since it is smaller than the sum of its proper divisors (165636034).

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

165126650 is a wasteful number, since it uses less digits than its factorization.

165126650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254066 (or 254061 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 165126650 is about 12850.1614775846. The cubic root of 165126650 is about 548.6209528379.

The spelling of 165126650 in words is "one hundred sixty-five million, one hundred twenty-six thousand, six hundred fifty".