18870279213 has 8 divisors (see below), whose sum is σ = 25188116128. Its totient is φ = 12566314224.

The previous prime is 18870279203. The next prime is 18870279247. The reversal of 18870279213 is 31297207881.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18870279213 - 2¹⁸ = 18870017069 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 (18870279203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3464806 + ... + 3470247.

It is an arithmetic number, because the mean of its divisors is an integer number (3148514516).

Almost surely, 2^18870279213 is an apocalyptic number.

It is an amenable number.

18870279213 is a deficient number, since it is larger than the sum of its proper divisors (6317836915).

18870279213 is an equidigital number, since it uses as much as digits as its factorization.

18870279213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6935963.

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 18870279213 in words is "eighteen billion, eight hundred seventy million, two hundred seventy-nine thousand, two hundred thirteen".