2130892861 has 4 divisors (see below), whose sum is σ = 2140198300. Its totient is φ = 2121587424.

The previous prime is 2130892853. The next prime is 2130892871. The reversal of 2130892861 is 1682980312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1458476100 + 672416761 = 38190^2 + 25931^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130892861 - 2³ = 2130892853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130892831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4652376 + ... + 4652833.

It is an arithmetic number, because the mean of its divisors is an integer number (535049575).

Almost surely, 2^2130892861 is an apocalyptic number.

It is an amenable number.

2130892861 is a deficient number, since it is larger than the sum of its proper divisors (9305439).

2130892861 is an equidigital number, since it uses as much as digits as its factorization.

2130892861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9305438.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 2130892861 is about 46161.5950872584. The cubic root of 2130892861 is about 1286.8281067248.

The spelling of 2130892861 in words is "two billion, one hundred thirty million, eight hundred ninety-two thousand, eight hundred sixty-one".