5144782985 has 4 divisors (see below), whose sum is σ = 6173739588. Its totient is φ = 4115826384.

The previous prime is 5144782963. The next prime is 5144782987. The reversal of 5144782985 is 5892874415.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2988480889 + 2156302096 = 54667^2 + 46436^2 .

It is a cyclic number.

It is not a de Polignac number, because 5144782985 - 2¹² = 5144778889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5144782987) 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, 514478294 + ... + 514478303.

It is an arithmetic number, because the mean of its divisors is an integer number (1543434897).

Almost surely, 2^5144782985 is an apocalyptic number.

It is an amenable number.

5144782985 is a deficient number, since it is larger than the sum of its proper divisors (1028956603).

5144782985 is a wasteful number, since it uses less digits than its factorization.

5144782985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028956602.

The product of its digits is 3225600, while the sum is 53.

The square root of 5144782985 is about 71727.1425960912. The cubic root of 5144782985 is about 1726.3241793538.

The spelling of 5144782985 in words is "five billion, one hundred forty-four million, seven hundred eighty-two thousand, nine hundred eighty-five".