1994580784 has 80 divisors (see below), whose sum is σ = 4662201600. Its totient is φ = 807535872.

The previous prime is 1994580761. The next prime is 1994580823. The reversal of 1994580784 is 4870854991.

It is a happy 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, 890514 + ... + 892750.

It is an arithmetic number, because the mean of its divisors is an integer number (58277520).

Almost surely, 2^1994580784 is an apocalyptic number.

1994580784 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 1994580784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2331100800).

1994580784 is an abundant number, since it is smaller than the sum of its proper divisors (2667620816).

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

1994580784 is a wasteful number, since it uses less digits than its factorization.

1994580784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690 (or 2684 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 55.

The square root of 1994580784 is about 44660.7297746018. The cubic root of 1994580784 is about 1258.7820564806.

The spelling of 1994580784 in words is "one billion, nine hundred ninety-four million, five hundred eighty thousand, seven hundred eighty-four".