2139475859 has 2 divisors, whose sum is σ = 2139475860. Its totient is φ = 2139475858.

The previous prime is 2139475837. The next prime is 2139475883. The reversal of 2139475859 is 9585749312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2139475859 - 2²⁸ = 1871040403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2139475859.

It is not a weakly prime, because it can be changed into another prime (2139475889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069737929 + 1069737930.

It is an arithmetic number, because the mean of its divisors is an integer number (1069737930).

Almost surely, 2^2139475859 is an apocalyptic number.

2139475859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2139475859 is an equidigital number, since it uses as much as digits as its factorization.

2139475859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 53.

The square root of 2139475859 is about 46254.4685300783. The cubic root of 2139475859 is about 1288.5535254029.

The spelling of 2139475859 in words is "two billion, one hundred thirty-nine million, four hundred seventy-five thousand, eight hundred fifty-nine".