18786263040 has 224 divisors, whose sum is σ = 66795456960. Its totient is φ = 5009375232.

The previous prime is 18786263039. The next prime is 18786263051. The reversal of 18786263040 is 4036268781.

18786263040 is a `hidden beast` number, since 1 + 8 + 7 + 8 + 6 + 2 + 630 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1097427 + ... + 1114413.

Almost surely, 2^18786263040 is an apocalyptic number.

18786263040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18786263040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33397728480).

18786263040 is an abundant number, since it is smaller than the sum of its proper divisors (48009193920).

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

18786263040 is an equidigital number, since it uses as much as digits as its factorization.

18786263040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17027 (or 16997 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 18786263040 in words is "eighteen billion, seven hundred eighty-six million, two hundred sixty-three thousand, forty".