1818317892080 has 80 divisors (see below), whose sum is σ = 4343112648000. Its totient is φ = 707553822720.

The previous prime is 1818317892073. The next prime is 1818317892113. The reversal of 1818317892080 is 802987138181.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350501 + ... + 1938939.

It is an arithmetic number, because the mean of its divisors is an integer number (54288908100).

Almost surely, 2^{1818317892080} is an apocalyptic number.

1818317892080 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 1818317892080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2171556324000).

1818317892080 is an abundant number, since it is smaller than the sum of its proper divisors (2524794755920).

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

1818317892080 is a wasteful number, since it uses less digits than its factorization.

1818317892080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588842 (or 1588836 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 56.

The spelling of 1818317892080 in words is "one trillion, eight hundred eighteen billion, three hundred seventeen million, eight hundred ninety-two thousand, eighty".