2180980990 has 16 divisors (see below), whose sum is σ = 3929484960. Its totient is φ = 871565920.

The previous prime is 2180980981. The next prime is 2180981041. The reversal of 2180980990 is 990890812.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2180980990.

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, 92170 + ... + 113389.

It is an arithmetic number, because the mean of its divisors is an integer number (245592810).

Almost surely, 2^2180980990 is an apocalyptic number.

2180980990 is a deficient number, since it is larger than the sum of its proper divisors (1748503970).

2180980990 is a wasteful number, since it uses less digits than its factorization.

2180980990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206627.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 2180980990 is about 46700.9741868411. The cubic root of 2180980990 is about 1296.8327215636.

The spelling of 2180980990 in words is "two billion, one hundred eighty million, nine hundred eighty thousand, nine hundred ninety".