5645814549 has 4 divisors (see below), whose sum is σ = 7527752736. Its totient is φ = 3763876364.

The previous prime is 5645814547. The next prime is 5645814589. The reversal of 5645814549 is 9454185465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5645814549 - 2¹ = 5645814547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645814547) 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, 940969089 + ... + 940969094.

It is an arithmetic number, because the mean of its divisors is an integer number (1881938184).

Almost surely, 2^5645814549 is an apocalyptic number.

It is an amenable number.

5645814549 is a deficient number, since it is larger than the sum of its proper divisors (1881938187).

5645814549 is a wasteful number, since it uses less digits than its factorization.

5645814549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881938186.

The product of its digits is 3456000, while the sum is 51.

The square root of 5645814549 is about 75138.6355279360. The cubic root of 5645814549 is about 1780.6375855268.

The spelling of 5645814549 in words is "five billion, six hundred forty-five million, eight hundred fourteen thousand, five hundred forty-nine".