18119340 has 72 divisors (see below), whose sum is σ = 56264208. Its totient is φ = 4717440.

The previous prime is 18119327. The next prime is 18119341. The reversal of 18119340 is 4391181.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (18119341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6570 + ... + 8910.

Almost surely, 2^18119340 is an apocalyptic number.

18119340 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 18119340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28132104).

18119340 is an abundant number, since it is smaller than the sum of its proper divisors (38144868).

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

18119340 is a wasteful number, since it uses less digits than its factorization.

18119340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399 (or 2394 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 18119340 is about 4256.6818062900. The cubic root of 18119340 is about 262.6520479666.

The spelling of 18119340 in words is "eighteen million, one hundred nineteen thousand, three hundred forty".