2101237791 has 24 divisors (see below), whose sum is σ = 2979972864. Its totient is φ = 1316730240.

The previous prime is 2101237771. The next prime is 2101237907. The reversal of 2101237791 is 1977321012.

It is a de Polignac number, because none of the positive numbers 2^k-2101237791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101237751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1326586 + ... + 1328168.

It is an arithmetic number, because the mean of its divisors is an integer number (124165536).

Almost surely, 2^2101237791 is an apocalyptic number.

2101237791 is a deficient number, since it is larger than the sum of its proper divisors (878735073).

2101237791 is a wasteful number, since it uses less digits than its factorization.

2101237791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151 (or 3134 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 2101237791 is about 45839.2603670696. The cubic root of 2101237791 is about 1280.8307170569.

The spelling of 2101237791 in words is "two billion, one hundred one million, two hundred thirty-seven thousand, seven hundred ninety-one".