1918816080 has 120 divisors (see below), whose sum is σ = 6278160672. Its totient is φ = 484731648.

The previous prime is 1918816057. The next prime is 1918816121. The reversal of 1918816080 is 806188191.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75567 + ... + 97713.

Almost surely, 2^1918816080 is an apocalyptic number.

1918816080 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 1918816080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3139080336).

1918816080 is an abundant number, since it is smaller than the sum of its proper divisors (4359344592).

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

1918816080 is a wasteful number, since it uses less digits than its factorization.

1918816080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22201 (or 22176 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 42.

The square root of 1918816080 is about 43804.2929403044. The cubic root of 1918816080 is about 1242.6374835554.

The spelling of 1918816080 in words is "one billion, nine hundred eighteen million, eight hundred sixteen thousand, eighty".