18119040 has 64 divisors (see below), whose sum is σ = 57760560. Its totient is φ = 4831232.

The previous prime is 18118979. The next prime is 18119041. The reversal of 18119040 is 4091181.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×18119040² = 656599221043200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 18119040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18119041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2799 + ... + 6638.

Almost surely, 2^18119040 is an apocalyptic number.

18119040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18119040 is an abundant number, since it is smaller than the sum of its proper divisors (39641520).

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

18119040 is an equidigital number, since it uses as much as digits as its factorization.

18119040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9459 (or 9447 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 18119040 is about 4256.6465674284. The cubic root of 18119040 is about 262.6505983912.

The spelling of 18119040 in words is "eighteen million, one hundred nineteen thousand, forty".