18870312235 has 16 divisors (see below), whose sum is σ = 23302743552. Its totient is φ = 14662242400.

The previous prime is 18870312221. The next prime is 18870312247. The reversal of 18870312235 is 53221307881.

It is a happy number.

It is not a de Polignac number, because 18870312235 - 2⁷ = 18870312107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275701 + ... + 337270.

It is an arithmetic number, because the mean of its divisors is an integer number (1456421472).

Almost surely, 2^18870312235 is an apocalyptic number.

18870312235 is a deficient number, since it is larger than the sum of its proper divisors (4432431317).

18870312235 is a wasteful number, since it uses less digits than its factorization.

18870312235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613154.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 18870312235 in words is "eighteen billion, eight hundred seventy million, three hundred twelve thousand, two hundred thirty-five".