20183822645 has 64 divisors (see below), whose sum is σ = 31508766720. Its totient is φ = 12077724672.

The previous prime is 20183822621. The next prime is 20183822657. The reversal of 20183822645 is 54622838102.

It is a cyclic number.

It is not a de Polignac number, because 20183822645 - 2³² = 15888855349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 512342 + ... + 550328.

It is an arithmetic number, because the mean of its divisors is an integer number (492324480).

Almost surely, 2^20183822645 is an apocalyptic number.

It is an amenable number.

20183822645 is a deficient number, since it is larger than the sum of its proper divisors (11324944075).

20183822645 is a wasteful number, since it uses less digits than its factorization.

20183822645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38082.

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 20183822645 in words is "twenty billion, one hundred eighty-three million, eight hundred twenty-two thousand, six hundred forty-five".