182831985 has 144 divisors (see below), whose sum is σ = 397365696. Its totient is φ = 80341632.

The previous prime is 182831983. The next prime is 182831993. The reversal of 182831985 is 589138281.

It is a happy number.

It is not a de Polignac number, because 182831985 - 2¹ = 182831983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (138240) is a multiple of the sum of its prime divisors (135).

It is a self number, because there is not a number n which added to its sum of digits gives 182831985.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (182831983) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2202754 + ... + 2202836.

It is an arithmetic number, because the mean of its divisors is an integer number (2759484).

Almost surely, 2^182831985 is an apocalyptic number.

182831985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

182831985 is an abundant number, since it is smaller than the sum of its proper divisors (214533711).

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

182831985 is an equidigital number, since it uses as much as digits as its factorization.

182831985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 135 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 182831985 is about 13521.5378193458. The cubic root of 182831985 is about 567.5673333783.

The spelling of 182831985 in words is "one hundred eighty-two million, eight hundred thirty-one thousand, nine hundred eighty-five".