5640917983 has 4 divisors (see below), whose sum is σ = 5641075528. Its totient is φ = 5640760440.

The previous prime is 5640917981. The next prime is 5640917987. The reversal of 5640917983 is 3897190465.

It is a happy number.

5640917983 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5640917983 - 2¹ = 5640917981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5640917983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640917981) 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, 3760 + ... + 106282.

It is an arithmetic number, because the mean of its divisors is an integer number (1410268882).

Almost surely, 2^5640917983 is an apocalyptic number.

5640917983 is a deficient number, since it is larger than the sum of its proper divisors (157545).

5640917983 is a wasteful number, since it uses less digits than its factorization.

5640917983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157544.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 5640917983 is about 75106.0449165046. The cubic root of 5640917983 is about 1780.1226594555.

The spelling of 5640917983 in words is "five billion, six hundred forty million, nine hundred seventeen thousand, nine hundred eighty-three".