2102805379 has 2 divisors, whose sum is σ = 2102805380. Its totient is φ = 2102805378.

The previous prime is 2102805347. The next prime is 2102805389. The reversal of 2102805379 is 9735082012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2102805379 - 2⁵ = 2102805347 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102805389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051402689 + 1051402690.

It is an arithmetic number, because the mean of its divisors is an integer number (1051402690).

Almost surely, 2^2102805379 is an apocalyptic number.

2102805379 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102805379 is an equidigital number, since it uses as much as digits as its factorization.

2102805379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2102805379 is about 45856.3559280499. The cubic root of 2102805379 is about 1281.1491509153.

The spelling of 2102805379 in words is "two billion, one hundred two million, eight hundred five thousand, three hundred seventy-nine".