9140243985 has 16 divisors (see below), whose sum is σ = 16249322880. Its totient is φ = 4874796720.

The previous prime is 9140243969. The next prime is 9140243993. The reversal of 9140243985 is 5893420419.

It is not a de Polignac number, because 9140243985 - 2⁴ = 9140243969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 9140243985.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33852621 + ... + 33852890.

It is an arithmetic number, because the mean of its divisors is an integer number (1015582680).

Almost surely, 2^9140243985 is an apocalyptic number.

It is an amenable number.

9140243985 is a deficient number, since it is larger than the sum of its proper divisors (7109078895).

9140243985 is a wasteful number, since it uses less digits than its factorization.

9140243985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67705525 (or 67705519 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 9140243985 is about 95604.6232407199. The cubic root of 9140243985 is about 2090.8325998274.

The spelling of 9140243985 in words is "nine billion, one hundred forty million, two hundred forty-three thousand, nine hundred eighty-five".