18894373451 has 8 divisors (see below), whose sum is σ = 19675351200. Its totient is φ = 18122025600.

The previous prime is 18894373429. The next prime is 18894373453. The reversal of 18894373451 is 15437349881.

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 18894373451 - 2⁶ = 18894373387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18894373393 and 18894373402.

It is not an unprimeable number, because it can be changed into a prime (18894373453) 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, 2153006 + ... + 2161763.

It is an arithmetic number, because the mean of its divisors is an integer number (2459418900).

Almost surely, 2^18894373451 is an apocalyptic number.

18894373451 is a deficient number, since it is larger than the sum of its proper divisors (780977749).

18894373451 is a wasteful number, since it uses less digits than its factorization.

18894373451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4314949.

The product of its digits is 2903040, while the sum is 53.

The spelling of 18894373451 in words is "eighteen billion, eight hundred ninety-four million, three hundred seventy-three thousand, four hundred fifty-one".