2115165980 has 24 divisors (see below), whose sum is σ = 4443104400. Its totient is φ = 845827200.

The previous prime is 2115165977. The next prime is 2115166003. The reversal of 2115165980 is 895615112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69080 + ... + 94880.

It is an arithmetic number, because the mean of its divisors is an integer number (185129350).

Almost surely, 2^2115165980 is an apocalyptic number.

2115165980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115165980 is an abundant number, since it is smaller than the sum of its proper divisors (2327938420).

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

2115165980 is a wasteful number, since it uses less digits than its factorization.

2115165980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29909 (or 29907 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 38.

The square root of 2115165980 is about 45990.9336717575. The cubic root of 2115165980 is about 1283.6545097447.

The spelling of 2115165980 in words is "two billion, one hundred fifteen million, one hundred sixty-five thousand, nine hundred eighty".