2148854399 has 4 divisors (see below), whose sum is σ = 2185275720. Its totient is φ = 2112433080.

The previous prime is 2148854377. The next prime is 2148854401. The reversal of 2148854399 is 9934588412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2148854399 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 2148854399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148854299) 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, 18210572 + ... + 18210689.

It is an arithmetic number, because the mean of its divisors is an integer number (546318930).

Almost surely, 2^2148854399 is an apocalyptic number.

2148854399 is a deficient number, since it is larger than the sum of its proper divisors (36421321).

2148854399 is an equidigital number, since it uses as much as digits as its factorization.

2148854399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36421320.

The product of its digits is 2488320, while the sum is 53.

The square root of 2148854399 is about 46355.7374981782. The cubic root of 2148854399 is about 1290.4336020105.

The spelling of 2148854399 in words is "two billion, one hundred forty-eight million, eight hundred fifty-four thousand, three hundred ninety-nine".