985117619 has 4 divisors (see below), whose sum is σ = 1009144920. Its totient is φ = 961090320.

The previous prime is 985117607. The next prime is 985117663. The reversal of 985117619 is 916711589.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 916711589 = 73 ⋅12557693.

It is a cyclic number.

It is not a de Polignac number, because 985117619 - 2⁸ = 985117363 is a prime.

It is a super-2 number, since 2×985117619² = 1940913446528458322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985117219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12013589 + ... + 12013670.

It is an arithmetic number, because the mean of its divisors is an integer number (252286230).

Almost surely, 2^985117619 is an apocalyptic number.

985117619 is a deficient number, since it is larger than the sum of its proper divisors (24027301).

985117619 is a wasteful number, since it uses less digits than its factorization.

985117619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24027300.

The product of its digits is 136080, while the sum is 47.

The square root of 985117619 is about 31386.5834234948. The cubic root of 985117619 is about 995.0143913476.

The spelling of 985117619 in words is "nine hundred eighty-five million, one hundred seventeen thousand, six hundred nineteen".