18773413452 has 18 divisors (see below), whose sum is σ = 47455017428. Its totient is φ = 6257804472.

The previous prime is 18773413409. The next prime is 18773413457. The reversal of 18773413452 is 25431437781.

18773413452 is a `hidden beast` number, since 187 + 7 + 3 + 4 + 13 + 452 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 18773413398 and 18773413407.

It is not an unprimeable number, because it can be changed into a prime (18773413457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260741818 + ... + 260741889.

Almost surely, 2^18773413452 is an apocalyptic number.

18773413452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18773413452 is an abundant number, since it is smaller than the sum of its proper divisors (28681603976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18773413452 is a wasteful number, since it uses less digits than its factorization.

18773413452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521483717 (or 521483712 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The spelling of 18773413452 in words is "eighteen billion, seven hundred seventy-three million, four hundred thirteen thousand, four hundred fifty-two".