18210739879 has 2 divisors, whose sum is σ = 18210739880. Its totient is φ = 18210739878.

The previous prime is 18210739861. The next prime is 18210739903. The reversal of 18210739879 is 97893701281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18210739879 - 2²⁷ = 18076522151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18210739849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9105369939 + 9105369940.

It is an arithmetic number, because the mean of its divisors is an integer number (9105369940).

Almost surely, 2^18210739879 is an apocalyptic number.

18210739879 is a deficient number, since it is larger than the sum of its proper divisors (1).

18210739879 is an equidigital number, since it uses as much as digits as its factorization.

18210739879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 55.

The spelling of 18210739879 in words is "eighteen billion, two hundred ten million, seven hundred thirty-nine thousand, eight hundred seventy-nine".