18119680 has 44 divisors (see below), whose sum is σ = 43478280. Its totient is φ = 7245824.

The previous prime is 18119659. The next prime is 18119683. The reversal of 18119680 is 8691181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18119683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3351 + ... + 6889.

Almost surely, 2^18119680 is an apocalyptic number.

18119680 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 18119680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21739140).

18119680 is an abundant number, since it is smaller than the sum of its proper divisors (25358600).

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

18119680 is an equidigital number, since it uses as much as digits as its factorization.

18119680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564 (or 3546 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 18119680 is about 4256.7217433137. The cubic root of 18119680 is about 262.6536907994.

The spelling of 18119680 in words is "eighteen million, one hundred nineteen thousand, six hundred eighty".