5645810369 has 4 divisors (see below), whose sum is σ = 5648226480. Its totient is φ = 5643394260.

The previous prime is 5645810351. The next prime is 5645810371. The reversal of 5645810369 is 9630185465.

It is a happy number.

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 5645810369 - 2¹⁶ = 5645744833 is a prime.

It is a super-2 number, since 2×5645810369² = 63750349445415832322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5645810329) 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, 1204547 + ... + 1209224.

It is an arithmetic number, because the mean of its divisors is an integer number (1412056620).

Almost surely, 2^5645810369 is an apocalyptic number.

It is an amenable number.

5645810369 is a deficient number, since it is larger than the sum of its proper divisors (2416111).

5645810369 is a wasteful number, since it uses less digits than its factorization.

5645810369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416110.

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 5645810369 is about 75138.6077126799. The cubic root of 5645810369 is about 1780.6371460822.

The spelling of 5645810369 in words is "five billion, six hundred forty-five million, eight hundred ten thousand, three hundred sixty-nine".