18747445248 has 416 divisors, whose sum is σ = 64678757120. Its totient is φ = 5255331840.

The previous prime is 18747445243. The next prime is 18747445253. The reversal of 18747445248 is 84254474781.

It is a happy number.

18747445248 is a `hidden beast` number, since 1 + 8 + 74 + 7 + 44 + 524 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (18747445243) and next prime (18747445253).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 18747445194 and 18747445203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18747445243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47222586 + ... + 47222982.

Almost surely, 2^18747445248 is an apocalyptic number.

18747445248 is a gapful number since it is divisible by the number (18) 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 18747445248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32339378560).

18747445248 is an abundant number, since it is smaller than the sum of its proper divisors (45931311872).

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

18747445248 is an equidigital number, since it uses as much as digits as its factorization.

18747445248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 470 counting only the distinct ones).

The product of its digits is 8028160, while the sum is 54.

The spelling of 18747445248 in words is "eighteen billion, seven hundred forty-seven million, four hundred forty-five thousand, two hundred forty-eight".