2119598861 has 2 divisors, whose sum is σ = 2119598862. Its totient is φ = 2119598860.

The previous prime is 2119598851. The next prime is 2119598869. The reversal of 2119598861 is 1688959112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1363898761 + 755700100 = 36931^2 + 27490^2 .

It is a cyclic number.

It is not a de Polignac number, because 2119598861 - 2⁶ = 2119598797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2119598869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059799430 + 1059799431.

It is an arithmetic number, because the mean of its divisors is an integer number (1059799431).

Almost surely, 2^2119598861 is an apocalyptic number.

It is an amenable number.

2119598861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2119598861 is an equidigital number, since it uses as much as digits as its factorization.

2119598861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 50.

The square root of 2119598861 is about 46039.1014356275. The cubic root of 2119598861 is about 1284.5506280955.

The spelling of 2119598861 in words is "two billion, one hundred nineteen million, five hundred ninety-eight thousand, eight hundred sixty-one".