994994189280 has 960 divisors, whose sum is σ = 4364338987008. Its totient is φ = 207869276160.

The previous prime is 994994189249. The next prime is 994994189323. The reversal of 994994189280 is 82981499499.

994994189280 is a `hidden beast` number, since 9 + 9 + 49 + 9 + 418 + 92 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 994994189199 and 994994189208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 121469985 + ... + 121478175.

Almost surely, 2^994994189280 is an apocalyptic number.

994994189280 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 994994189280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2182169493504).

994994189280 is an abundant number, since it is smaller than the sum of its proper divisors (3369344797728).

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

994994189280 is a wasteful number, since it uses less digits than its factorization.

994994189280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8341 (or 8324 counting only the distinct ones).

The product of its (nonzero) digits is 120932352, while the sum is 72.

The spelling of 994994189280 in words is "nine hundred ninety-four billion, nine hundred ninety-four million, one hundred eighty-nine thousand, two hundred eighty".