985311938 has 8 divisors (see below), whose sum is σ = 1591657788. Its totient is φ = 454759344.

The previous prime is 985311911. The next prime is 985311947. The reversal of 985311938 is 839113589.

It can be written as a sum of positive squares in 2 ways, for example, as 983888689 + 1423249 = 31367^2 + 1193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 985311892 and 985311901.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18948281 + ... + 18948332.

Almost surely, 2^985311938 is an apocalyptic number.

985311938 is a deficient number, since it is larger than the sum of its proper divisors (606345850).

985311938 is a wasteful number, since it uses less digits than its factorization.

985311938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37896628.

The product of its digits is 233280, while the sum is 47.

The square root of 985311938 is about 31389.6788451236. The cubic root of 985311938 is about 995.0798107744.

The spelling of 985311938 in words is "nine hundred eighty-five million, three hundred eleven thousand, nine hundred thirty-eight".