1994566896 has 160 divisors (see below), whose sum is σ = 6617433600. Its totient is φ = 563397120.

The previous prime is 1994566883. The next prime is 1994566907. The reversal of 1994566896 is 6986654991.

1994566896 is a `hidden beast` number, since 1 + 99 + 456 + 6 + 8 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 31 ways as a sum of consecutive naturals, for example, 265431 + ... + 272841.

It is an arithmetic number, because the mean of its divisors is an integer number (41358960).

Almost surely, 2^1994566896 is an apocalyptic number.

1994566896 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 1994566896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3308716800).

1994566896 is an abundant number, since it is smaller than the sum of its proper divisors (4622866704).

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

1994566896 is a wasteful number, since it uses less digits than its factorization.

1994566896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7524 (or 7512 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The square root of 1994566896 is about 44660.5742909784. The cubic root of 1994566896 is about 1258.7791348967.

The spelling of 1994566896 in words is "one billion, nine hundred ninety-four million, five hundred sixty-six thousand, eight hundred ninety-six".