18855387753 has 8 divisors (see below), whose sum is σ = 25279415616. Its totient is φ = 12500809200.

The previous prime is 18855387709. The next prime is 18855387773. The reversal of 18855387753 is 35778355881.

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

It is not a de Polignac number, because 18855387753 - 2¹⁸ = 18855125609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18855387773) 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, 17361693 + ... + 17362778.

It is an arithmetic number, because the mean of its divisors is an integer number (3159926952).

Almost surely, 2^18855387753 is an apocalyptic number.

It is an amenable number.

18855387753 is a deficient number, since it is larger than the sum of its proper divisors (6424027863).

18855387753 is a wasteful number, since it uses less digits than its factorization.

18855387753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34724655.

The product of its digits is 28224000, while the sum is 60.

The spelling of 18855387753 in words is "eighteen billion, eight hundred fifty-five million, three hundred eighty-seven thousand, seven hundred fifty-three".