18140376 has 64 divisors (see below), whose sum is σ = 48211200. Its totient is φ = 5675648.

The previous prime is 18140371. The next prime is 18140387. The reversal of 18140376 is 67304181.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18140371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32290 + ... + 32846.

It is an arithmetic number, because the mean of its divisors is an integer number (753300).

Almost surely, 2^18140376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18140376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24105600).

18140376 is an abundant number, since it is smaller than the sum of its proper divisors (30070824).

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

18140376 is a wasteful number, since it uses less digits than its factorization.

18140376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 18140376 is about 4259.1520282798. The cubic root of 18140376 is about 262.7536523239.

The spelling of 18140376 in words is "eighteen million, one hundred forty thousand, three hundred seventy-six".