18741502416 has 480 divisors, whose sum is σ = 65352960000. Its totient is φ = 4513646592.

The previous prime is 18741502369. The next prime is 18741502421. The reversal of 18741502416 is 61420514781.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31287685 + ... + 31288283.

It is an arithmetic number, because the mean of its divisors is an integer number (136152000).

Almost surely, 2^18741502416 is an apocalyptic number.

18741502416 is a gapful number since it is divisible by the number (16) 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 18741502416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32676480000).

18741502416 is an abundant number, since it is smaller than the sum of its proper divisors (46611457584).

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

18741502416 is a wasteful number, since it uses less digits than its factorization.

18741502416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 18741502416 in words is "eighteen billion, seven hundred forty-one million, five hundred two thousand, four hundred sixteen".