18814454853 has 16 divisors (see below), whose sum is σ = 25471697856. Its totient is φ = 12350257920.

The previous prime is 18814454839. The next prime is 18814454881. The reversal of 18814454853 is 35845441881.

It is a happy number.

It is not a de Polignac number, because 18814454853 - 2⁴ = 18814454837 is a prime.

It is a super-2 number, since 2×18814454853² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18814454796 and 18814454805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18814454833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458925 + ... + 498237.

It is an arithmetic number, because the mean of its divisors is an integer number (1591981116).

Almost surely, 2^18814454853 is an apocalyptic number.

It is an amenable number.

18814454853 is a deficient number, since it is larger than the sum of its proper divisors (6657243003).

18814454853 is a wasteful number, since it uses less digits than its factorization.

18814454853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41764.

The product of its digits is 2457600, while the sum is 51.

The spelling of 18814454853 in words is "eighteen billion, eight hundred fourteen million, four hundred fifty-four thousand, eight hundred fifty-three".