2190716690 has 16 divisors (see below), whose sum is σ = 3945787992. Its totient is φ = 875731584.

The previous prime is 2190716659. The next prime is 2190716741. The reversal of 2190716690 is 966170912.

It can be written as a sum of positive squares in 4 ways, for example, as 1546927561 + 643789129 = 39331^2 + 25373^2 .

It is a super-2 number, since 2×2190716690² = 9598479231689112200, which contains 22 as substring.

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, 52619 + ... + 84558.

Almost surely, 2^2190716690 is an apocalyptic number.

2190716690 is a deficient number, since it is larger than the sum of its proper divisors (1755071302).

2190716690 is a wasteful number, since it uses less digits than its factorization.

2190716690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138781.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 2190716690 is about 46805.0925648054. The cubic root of 2190716690 is about 1298.7595050258.

The spelling of 2190716690 in words is "two billion, one hundred ninety million, seven hundred sixteen thousand, six hundred ninety".