182109820 has 12 divisors (see below), whose sum is σ = 382430664. Its totient is φ = 72843920.

The previous prime is 182109803. The next prime is 182109839. The reversal of 182109820 is 28901281.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4552726 + ... + 4552765.

It is an arithmetic number, because the mean of its divisors is an integer number (31869222).

Almost surely, 2^182109820 is an apocalyptic number.

182109820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

182109820 is an abundant number, since it is smaller than the sum of its proper divisors (200320844).

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

182109820 is a wasteful number, since it uses less digits than its factorization.

182109820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9105500 (or 9105498 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 182109820 is about 13494.8071494186. The cubic root of 182109820 is about 566.8190724245.

The spelling of 182109820 in words is "one hundred eighty-two million, one hundred nine thousand, eight hundred twenty".