985145843 has 4 divisors (see below), whose sum is σ = 1074704568. Its totient is φ = 895587120.

The previous prime is 985145809. The next prime is 985145851. The reversal of 985145843 is 348541589.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 985145843 - 2⁶ = 985145779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985145873) 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, 44779346 + ... + 44779367.

It is an arithmetic number, because the mean of its divisors is an integer number (268676142).

Almost surely, 2^985145843 is an apocalyptic number.

985145843 is a deficient number, since it is larger than the sum of its proper divisors (89558725).

985145843 is a wasteful number, since it uses less digits than its factorization.

985145843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89558724.

The product of its digits is 691200, while the sum is 47.

The square root of 985145843 is about 31387.0330391389. The cubic root of 985145843 is about 995.0238937723.

The spelling of 985145843 in words is "nine hundred eighty-five million, one hundred forty-five thousand, eight hundred forty-three".