985442752258 has 4 divisors (see below), whose sum is σ = 1478164128390. Its totient is φ = 492721376128.

The previous prime is 985442752241. The next prime is 985442752277. The reversal of 985442752258 is 852257244589.

985442752258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 852257244589 = 1423 ⋅598915843.

It can be written as a sum of positive squares in only one way, i.e., 843655109049 + 141787643209 = 918507^2 + 376547^2 .

It is a junction number, because it is equal to n+sod(n) for n = 985442752196 and 985442752205.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246360688063 + ... + 246360688066.

Almost surely, 2^985442752258 is an apocalyptic number.

985442752258 is a deficient number, since it is larger than the sum of its proper divisors (492721376132).

985442752258 is a wasteful number, since it uses less digits than its factorization.

985442752258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492721376131.

The product of its digits is 64512000, while the sum is 61.

The spelling of 985442752258 in words is "nine hundred eighty-five billion, four hundred forty-two million, seven hundred fifty-two thousand, two hundred fifty-eight".