18914881454 has 32 divisors (see below), whose sum is σ = 33141298176. Its totient is φ = 7929367200.

The previous prime is 18914881429. The next prime is 18914881459. The reversal of 18914881454 is 45418841981.

It is a junction number, because it is equal to n+sod(n) for n = 18914881396 and 18914881405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18914881459) 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, 36779 + ... + 197945.

It is an arithmetic number, because the mean of its divisors is an integer number (1035665568).

Almost surely, 2^18914881454 is an apocalyptic number.

18914881454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18914881454 is a deficient number, since it is larger than the sum of its proper divisors (14226416722).

18914881454 is a wasteful number, since it uses less digits than its factorization.

18914881454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161360.

The product of its digits is 1474560, while the sum is 53.

The spelling of 18914881454 in words is "eighteen billion, nine hundred fourteen million, eight hundred eighty-one thousand, four hundred fifty-four".