18735370513 has 8 divisors (see below), whose sum is σ = 19177698848. Its totient is φ = 18293343264.

The previous prime is 18735370501. The next prime is 18735370517. The reversal of 18735370513 is 31507353781.

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

It is a cyclic number.

It is not a de Polignac number, because 18735370513 - 2⁹ = 18735370001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18735370513.

It is not an unprimeable number, because it can be changed into a prime (18735370517) 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, 53206 + ... + 200752.

It is an arithmetic number, because the mean of its divisors is an integer number (2397212356).

Almost surely, 2^18735370513 is an apocalyptic number.

It is an amenable number.

18735370513 is a deficient number, since it is larger than the sum of its proper divisors (442328335).

18735370513 is a wasteful number, since it uses less digits than its factorization.

18735370513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150543.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 18735370513 in words is "eighteen billion, seven hundred thirty-five million, three hundred seventy thousand, five hundred thirteen".