1818891360 has 576 divisors, whose sum is σ = 7453083456. Its totient is φ = 401448960.

The previous prime is 1818891343. The next prime is 1818891383. The reversal of 1818891360 is 631988181.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 24916284 + ... + 24916356.

It is an arithmetic number, because the mean of its divisors is an integer number (12939381).

Almost surely, 2^1818891360 is an apocalyptic number.

1818891360 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 1818891360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3726541728).

1818891360 is an abundant number, since it is smaller than the sum of its proper divisors (5634192096).

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

1818891360 is a wasteful number, since it uses less digits than its factorization.

1818891360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 1818891360 is about 42648.4625748690. The cubic root of 1818891360 is about 1220.6811926360.

The spelling of 1818891360 in words is "one billion, eight hundred eighteen million, eight hundred ninety-one thousand, three hundred sixty".