162109512 has 40 divisors (see below), whose sum is σ = 454058550. Its totient is φ = 54036288.

The previous prime is 162109511. The next prime is 162109529. The reversal of 162109512 is 215901261.

It can be written as a sum of positive squares in only one way, i.e., 85266756 + 76842756 = 9234^2 + 8766^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (162109511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 124437 + ... + 125732.

Almost surely, 2^162109512 is an apocalyptic number.

162109512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

162109512 is an abundant number, since it is smaller than the sum of its proper divisors (291949038).

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

162109512 is a wasteful number, since it uses less digits than its factorization.

162109512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250187 (or 250174 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 162109512 is about 12732.2233722159. The cubic root of 162109512 is about 545.2589875328.

It can be divided in two parts, 162 and 109512, that multiplied together give a square (17740944 = 4212²).

The spelling of 162109512 in words is "one hundred sixty-two million, one hundred nine thousand, five hundred twelve".