2115658180 has 12 divisors (see below), whose sum is σ = 4442882220. Its totient is φ = 846263264.

The previous prime is 2115658169. The next prime is 2115658201. The reversal of 2115658180 is 818565112.

It can be written as a sum of positive squares in 2 ways, for example, as 993006144 + 1122652036 = 31512^2 + 33506^2 .

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, 52891435 + ... + 52891474.

It is an arithmetic number, because the mean of its divisors is an integer number (370240185).

Almost surely, 2^2115658180 is an apocalyptic number.

2115658180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115658180 is an abundant number, since it is smaller than the sum of its proper divisors (2327224040).

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

2115658180 is a wasteful number, since it uses less digits than its factorization.

2115658180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105782918 (or 105782916 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 37.

The square root of 2115658180 is about 45996.2844151568. The cubic root of 2115658180 is about 1283.7540710012.

The spelling of 2115658180 in words is "two billion, one hundred fifteen million, six hundred fifty-eight thousand, one hundred eighty".