994381873 has 2 divisors, whose sum is σ = 994381874. Its totient is φ = 994381872.

The previous prime is 994381849. The next prime is 994381939. The reversal of 994381873 is 378183499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 673506304 + 320875569 = 25952^2 + 17913^2 .

It is a cyclic number.

It is not a de Polignac number, because 994381873 - 2⁹ = 994381361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 994381873.

It is not a weakly prime, because it can be changed into another prime (994331873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497190936 + 497190937.

It is an arithmetic number, because the mean of its divisors is an integer number (497190937).

Almost surely, 2^994381873 is an apocalyptic number.

It is an amenable number.

994381873 is a deficient number, since it is larger than the sum of its proper divisors (1).

994381873 is an equidigital number, since it uses as much as digits as its factorization.

994381873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The square root of 994381873 is about 31533.8210973551. The cubic root of 994381873 is about 998.1237729737.

The spelling of 994381873 in words is "nine hundred ninety-four million, three hundred eighty-one thousand, eight hundred seventy-three".