2190898660 has 48 divisors (see below), whose sum is σ = 4689780480. Its totient is φ = 859541760.

The previous prime is 2190898621. The next prime is 2190898669. The reversal of 2190898660 is 668980912.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2190898669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316840 + ... + 323680.

It is an arithmetic number, because the mean of its divisors is an integer number (97703760).

Almost surely, 2^2190898660 is an apocalyptic number.

2190898660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2190898660 is an abundant number, since it is smaller than the sum of its proper divisors (2498881820).

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

2190898660 is a wasteful number, since it uses less digits than its factorization.

2190898660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156 (or 7154 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 2190898660 is about 46807.0364368436. The cubic root of 2190898660 is about 1298.7954641443.

The spelling of 2190898660 in words is "two billion, one hundred ninety million, eight hundred ninety-eight thousand, six hundred sixty".