18760649688 has 216 divisors, whose sum is σ = 57642041340. Its totient is φ = 5466614400.

The previous prime is 18760649671. The next prime is 18760649689. The reversal of 18760649688 is 88694606781.

18760649688 is a `hidden beast` number, since 1 + 8 + 7 + 60 + 6 + 496 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18760649689) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 119494506 + ... + 119494662.

Almost surely, 2^18760649688 is an apocalyptic number.

18760649688 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 18760649688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28821020670).

18760649688 is an abundant number, since it is smaller than the sum of its proper divisors (38881391652).

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

18760649688 is a wasteful number, since it uses less digits than its factorization.

18760649688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 18760649688 in words is "eighteen billion, seven hundred sixty million, six hundred forty-nine thousand, six hundred eighty-eight".