18783531454 has 8 divisors (see below), whose sum is σ = 28175968728. Its totient is φ = 9391541880.

The previous prime is 18783531397. The next prime is 18783531457. The reversal of 18783531454 is 45413538781.

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

It is a junction number, because it is equal to n+sod(n) for n = 18783531398 and 18783531407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18783531457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27904 + ... + 195820.

It is an arithmetic number, because the mean of its divisors is an integer number (3521996091).

Almost surely, 2^18783531454 is an apocalyptic number.

18783531454 is a deficient number, since it is larger than the sum of its proper divisors (9392437274).

18783531454 is a wasteful number, since it uses less digits than its factorization.

18783531454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223850.

The product of its digits is 1612800, while the sum is 49.

The spelling of 18783531454 in words is "eighteen billion, seven hundred eighty-three million, five hundred thirty-one thousand, four hundred fifty-four".