2102644790 has 16 divisors (see below), whose sum is σ = 3810164400. Its totient is φ = 835412640.

The previous prime is 2102644787. The next prime is 2102644793. The reversal of 2102644790 is 974462012.

It is an interprime number because it is at equal distance from previous prime (2102644787) and next prime (2102644793).

It is a super-2 number, since 2×2102644790² = 8842230225828288200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2102644790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102644793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704096 + ... + 707075.

It is an arithmetic number, because the mean of its divisors is an integer number (238135275).

Almost surely, 2^2102644790 is an apocalyptic number.

2102644790 is a deficient number, since it is larger than the sum of its proper divisors (1707519610).

2102644790 is a wasteful number, since it uses less digits than its factorization.

2102644790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411327.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 2102644790 is about 45854.6048941652. The cubic root of 2102644790 is about 1281.1165367544.

The spelling of 2102644790 in words is "two billion, one hundred two million, six hundred forty-four thousand, seven hundred ninety".