2100772930 has 16 divisors (see below), whose sum is σ = 3783180024. Its totient is φ = 839911680.

The previous prime is 2100772897. The next prime is 2100772931. The reversal of 2100772930 is 392770012.

It can be written as a sum of positive squares in 4 ways, for example, as 1707425041 + 393347889 = 41321^2 + 19833^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2100772892 and 2100772901.

It is not an unprimeable number, because it can be changed into a prime (2100772931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26997 + ... + 70216.

Almost surely, 2^2100772930 is an apocalyptic number.

2100772930 is a deficient number, since it is larger than the sum of its proper divisors (1682407094).

2100772930 is a wasteful number, since it uses less digits than its factorization.

2100772930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99381.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 2100772930 is about 45834.1895313968. The cubic root of 2100772930 is about 1280.7362565182.

The spelling of 2100772930 in words is "two billion, one hundred million, seven hundred seventy-two thousand, nine hundred thirty".