2101949976 has 32 divisors (see below), whose sum is σ = 6005571840. Its totient is φ = 600557088.

The previous prime is 2101949903. The next prime is 2101949977. The reversal of 2101949976 is 6799491012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101949977) 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, 6255636 + ... + 6255971.

It is an arithmetic number, because the mean of its divisors is an integer number (187674120).

Almost surely, 2^2101949976 is an apocalyptic number.

It is an amenable number.

2101949976 is an abundant number, since it is smaller than the sum of its proper divisors (3903621864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101949976 is a wasteful number, since it uses less digits than its factorization.

2101949976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12511623 (or 12511619 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 2101949976 is about 45847.0279952801. The cubic root of 2101949976 is about 1280.9754072310.

The spelling of 2101949976 in words is "two billion, one hundred one million, nine hundred forty-nine thousand, nine hundred seventy-six".