985193513 has 8 divisors (see below), whose sum is σ = 992579400. Its totient is φ = 977818240.

The previous prime is 985193501. The next prime is 985193519. The reversal of 985193513 is 315391589.

It can be written as a sum of positive squares in 4 ways, for example, as 144889369 + 840304144 = 12037^2 + 28988^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 985193513 - 2²² = 980999209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985193519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353381 + ... + 356157.

It is an arithmetic number, because the mean of its divisors is an integer number (124072425).

Almost surely, 2^985193513 is an apocalyptic number.

It is an amenable number.

985193513 is a deficient number, since it is larger than the sum of its proper divisors (7385887).

985193513 is a wasteful number, since it uses less digits than its factorization.

985193513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5307.

The product of its digits is 145800, while the sum is 44.

The square root of 985193513 is about 31387.7924199839. The cubic root of 985193513 is about 995.0399428424.

The spelling of 985193513 in words is "nine hundred eighty-five million, one hundred ninety-three thousand, five hundred thirteen".