2105372877 has 4 divisors (see below), whose sum is σ = 2807163840. Its totient is φ = 1403581916.

The previous prime is 2105372809. The next prime is 2105372887. The reversal of 2105372877 is 7782735012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105372877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105372887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350895477 + ... + 350895482.

It is an arithmetic number, because the mean of its divisors is an integer number (701790960).

Almost surely, 2^2105372877 is an apocalyptic number.

It is an amenable number.

2105372877 is a deficient number, since it is larger than the sum of its proper divisors (701790963).

2105372877 is an equidigital number, since it uses as much as digits as its factorization.

2105372877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701790962.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 2105372877 is about 45884.3423947647. The cubic root of 2105372877 is about 1281.6703609890.

The spelling of 2105372877 in words is "two billion, one hundred five million, three hundred seventy-two thousand, eight hundred seventy-seven".