994237009920 has 1664 divisors, whose sum is σ = 4642527744000. Its totient is φ = 195562045440.

The previous prime is 994237009903. The next prime is 994237009957. The reversal of 994237009920 is 29900732499.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 127 ways as a sum of consecutive naturals, for example, 808979866 + ... + 808981094.

Almost surely, 2^994237009920 is an apocalyptic number.

994237009920 is a gapful number since it is divisible by the number (90) 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 994237009920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2321263872000).

994237009920 is an abundant number, since it is smaller than the sum of its proper divisors (3648290734080).

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

994237009920 is a wasteful number, since it uses less digits than its factorization.

994237009920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The spelling of 994237009920 in words is "nine hundred ninety-four billion, two hundred thirty-seven million, nine thousand, nine hundred twenty".