18757668 has 48 divisors (see below), whose sum is σ = 45581760. Its totient is φ = 5998464.

The previous prime is 18757663. The next prime is 18757699. The reversal of 18757668 is 86675781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18757663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36598 + ... + 37106.

It is an arithmetic number, because the mean of its divisors is an integer number (949620).

Almost surely, 2^18757668 is an apocalyptic number.

It is an amenable number.

18757668 is an abundant number, since it is smaller than the sum of its proper divisors (26824092).

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

18757668 is a wasteful number, since it uses less digits than its factorization.

18757668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 634 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 18757668 is about 4331.0123527877. The cubic root of 18757668 is about 265.7008527639.

The spelling of 18757668 in words is "eighteen million, seven hundred fifty-seven thousand, six hundred sixty-eight".