2100872834 has 16 divisors (see below), whose sum is σ = 3224880000. Its totient is φ = 1026003504.

The previous prime is 2100872797. The next prime is 2100872899. The reversal of 2100872834 is 4382780012.

It is a junction number, because it is equal to n+sod(n) for n = 2100872794 and 2100872803.

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, 24512 + ... + 69300.

It is an arithmetic number, because the mean of its divisors is an integer number (201555000).

Almost surely, 2^2100872834 is an apocalyptic number.

2100872834 is a deficient number, since it is larger than the sum of its proper divisors (1124007166).

2100872834 is a wasteful number, since it uses less digits than its factorization.

2100872834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45337.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 2100872834 is about 45835.2793598992. The cubic root of 2100872834 is about 1280.7565583548.

The spelling of 2100872834 in words is "two billion, one hundred million, eight hundred seventy-two thousand, eight hundred thirty-four".