21849288193 has 8 divisors (see below), whose sum is σ = 22237191360. Its totient is φ = 21463202640.

The previous prime is 21849288191. The next prime is 21849288247. The reversal of 21849288193 is 39188294812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21849288193 - 2¹ = 21849288191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21849288191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430138 + ... + 478243.

It is an arithmetic number, because the mean of its divisors is an integer number (2779648920).

Almost surely, 2^21849288193 is an apocalyptic number.

It is an amenable number.

21849288193 is a deficient number, since it is larger than the sum of its proper divisors (387903167).

21849288193 is an equidigital number, since it uses as much as digits as its factorization.

21849288193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908807.

The product of its digits is 1990656, while the sum is 55.

The spelling of 21849288193 in words is "twenty-one billion, eight hundred forty-nine million, two hundred eighty-eight thousand, one hundred ninety-three".