861814932 has 96 divisors (see below), whose sum is σ = 2355018624. Its totient is φ = 242380800.

The previous prime is 861814913. The next prime is 861814963. The reversal of 861814932 is 239418168.

It is a super-3 number, since 3×861814932³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 161182 + ... + 166442.

It is an arithmetic number, because the mean of its divisors is an integer number (24531444).

Almost surely, 2^861814932 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 861814932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1177509312).

861814932 is an abundant number, since it is smaller than the sum of its proper divisors (1493203692).

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

861814932 is a wasteful number, since it uses less digits than its factorization.

861814932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369 (or 5367 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 861814932 is about 29356.6846220754. The cubic root of 861814932 is about 951.6370415084.

The spelling of 861814932 in words is "eight hundred sixty-one million, eight hundred fourteen thousand, nine hundred thirty-two".