18957744 has 180 divisors, whose sum is σ = 61949160. Its totient is φ = 5391360.

The previous prime is 18957739. The next prime is 18957761. The reversal of 18957744 is 44775981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18957744.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 462364 + ... + 462404.

It is an arithmetic number, because the mean of its divisors is an integer number (344162).

Almost surely, 2^18957744 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 18957744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30974580).

18957744 is an abundant number, since it is smaller than the sum of its proper divisors (42991416).

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

18957744 is a wasteful number, since it uses less digits than its factorization.

18957744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 78 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 18957744 is about 4354.0491499293. The cubic root of 18957744 is about 266.6422005331.

It can be divided in two parts, 18957 and 744, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 18957744 in words is "eighteen million, nine hundred fifty-seven thousand, seven hundred forty-four".