985830191242 has 8 divisors (see below), whose sum is σ = 1592494924356. Its totient is φ = 454998549792.

The previous prime is 985830191161. The next prime is 985830191273. The reversal of 985830191242 is 242191038589.

It can be written as a sum of positive squares in 2 ways, for example, as 976106456361 + 9723734881 = 987981^2 + 98609^2 .

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

It is a super-2 number, since 2×985830191242² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 985830191242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18958272883 + ... + 18958272934.

Almost surely, 2^985830191242 is an apocalyptic number.

985830191242 is a deficient number, since it is larger than the sum of its proper divisors (606664733114).

985830191242 is a wasteful number, since it uses less digits than its factorization.

985830191242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37916545832.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 985830191242 in words is "nine hundred eighty-five billion, eight hundred thirty million, one hundred ninety-one thousand, two hundred forty-two".