2100736987 has 8 divisors (see below), whose sum is σ = 2137392320. Its totient is φ = 2064294720.

The previous prime is 2100736931. The next prime is 2100736997. The reversal of 2100736987 is 7896370012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2100736987 - 2²⁷ = 1966519259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100736997) 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, 33312 + ... + 72877.

It is an arithmetic number, because the mean of its divisors is an integer number (267174040).

Almost surely, 2^2100736987 is an apocalyptic number.

2100736987 is a deficient number, since it is larger than the sum of its proper divisors (36655333).

2100736987 is a wasteful number, since it uses less digits than its factorization.

2100736987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106533.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 2100736987 is about 45833.7974315897. The cubic root of 2100736987 is about 1280.7289522596.

The spelling of 2100736987 in words is "two billion, one hundred million, seven hundred thirty-six thousand, nine hundred eighty-seven".