1845494784 has 132 divisors (see below), whose sum is σ = 6090299904. Its totient is φ = 527265792.

The previous prime is 1845494753. The next prime is 1845494801. The reversal of 1845494784 is 4874945481.

1845494784 is a `hidden beast` number, since 1 + 84 + 5 + 494 + 78 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1845494784.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50209 + ... + 78815.

Almost surely, 2^1845494784 is an apocalyptic number.

1845494784 is a gapful number since it is divisible by the number (14) 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 1845494784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3045149952).

1845494784 is an abundant number, since it is smaller than the sum of its proper divisors (4244805120).

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

1845494784 is a wasteful number, since it uses less digits than its factorization.

1845494784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28640 (or 28619 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The square root of 1845494784 is about 42959.2223393301. Note that the first 3 decimals coincide. The cubic root of 1845494784 is about 1226.6037102745.

The spelling of 1845494784 in words is "one billion, eight hundred forty-five million, four hundred ninety-four thousand, seven hundred eighty-four".