1918811447376 has 160 divisors (see below), whose sum is σ = 5267843729280. Its totient is φ = 601012887552.

The previous prime is 1918811447327. The next prime is 1918811447383. The reversal of 1918811447376 is 6737441188191.

It is a super-3 number, since 3×1918811447376³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

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, 6655596 + ... + 6937908.

It is an arithmetic number, because the mean of its divisors is an integer number (32924023308).

Almost surely, 2^{1918811447376} is an apocalyptic number.

1918811447376 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 1918811447376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2633921864640).

1918811447376 is an abundant number, since it is smaller than the sum of its proper divisors (3349032281904).

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

1918811447376 is a wasteful number, since it uses less digits than its factorization.

1918811447376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282493 (or 282487 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 60.

The spelling of 1918811447376 in words is "one trillion, nine hundred eighteen billion, eight hundred eleven million, four hundred forty-seven thousand, three hundred seventy-six".