994581238 has 24 divisors (see below), whose sum is σ = 1752356592. Its totient is φ = 414720864.

The previous prime is 994581233. The next prime is 994581253. The reversal of 994581238 is 832185499.

It is a super-2 number, since 2×994581238² = 1978383677963225288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 994581191 and 994581200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994581233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6781 + ... + 45112.

It is an arithmetic number, because the mean of its divisors is an integer number (73014858).

Almost surely, 2^994581238 is an apocalyptic number.

994581238 is a deficient number, since it is larger than the sum of its proper divisors (757775354).

994581238 is a wasteful number, since it uses less digits than its factorization.

994581238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51976 (or 51939 counting only the distinct ones).

The product of its digits is 622080, while the sum is 49.

The square root of 994581238 is about 31536.9820686761. The cubic root of 994581238 is about 998.1904735892.

The spelling of 994581238 in words is "nine hundred ninety-four million, five hundred eighty-one thousand, two hundred thirty-eight".