1618601904320 has 224 divisors, whose sum is σ = 4100126294016. Its totient is φ = 607334604800.

The previous prime is 1618601904313. The next prime is 1618601904331. The reversal of 1618601904320 is 234091068161.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99800852 + ... + 99817068.

Almost surely, 2^{1618601904320} is an apocalyptic number.

1618601904320 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 1618601904320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2050063147008).

1618601904320 is an abundant number, since it is smaller than the sum of its proper divisors (2481524389696).

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

1618601904320 is a wasteful number, since it uses less digits than its factorization.

1618601904320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16519 (or 16509 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 1618601904320 in words is "one trillion, six hundred eighteen billion, six hundred one million, nine hundred four thousand, three hundred twenty".