820941180 has 24 divisors (see below), whose sum is σ = 2298635472. Its totient is φ = 218917632.

The previous prime is 820941179. The next prime is 820941181. The reversal of 820941180 is 81149028.

It is an interprime number because it is at equal distance from previous prime (820941179) and next prime (820941181).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820941181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6841117 + ... + 6841236.

It is an arithmetic number, because the mean of its divisors is an integer number (95776478).

Almost surely, 2^820941180 is an apocalyptic number.

It is an amenable number.

820941180 is an abundant number, since it is smaller than the sum of its proper divisors (1477694292).

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

820941180 is a wasteful number, since it uses less digits than its factorization.

820941180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13682365 (or 13682363 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 820941180 is about 28652.0711293268. The cubic root of 820941180 is about 936.3481291416.

It can be divided in two parts, 820941 and 180, that added together give a triangular number (821121 = T₁₂₈₁).

The spelling of 820941180 in words is "eight hundred twenty million, nine hundred forty-one thousand, one hundred eighty".