2101894012 has 6 divisors (see below), whose sum is σ = 3678314528. Its totient is φ = 1050947004.

The previous prime is 2101894007. The next prime is 2101894021. The reversal of 2101894012 is 2104981012.

It is a super-2 number, since 2×2101894012² = 8835916875362912288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262736748 + ... + 262736755.

Almost surely, 2^2101894012 is an apocalyptic number.

It is an amenable number.

2101894012 is a deficient number, since it is larger than the sum of its proper divisors (1576420516).

2101894012 is a wasteful number, since it uses less digits than its factorization.

2101894012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525473507 (or 525473505 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 2101894012 is about 45846.4176572172. The cubic root of 2101894012 is about 1280.9640385583.

The spelling of 2101894012 in words is "two billion, one hundred one million, eight hundred ninety-four thousand, twelve".