2148399653 has 2 divisors, whose sum is σ = 2148399654. Its totient is φ = 2148399652.

The previous prime is 2148399641. The next prime is 2148399703. The reversal of 2148399653 is 3569938412.

It is a happy number.

It is an a-pointer prime, because the next prime (2148399703) can be obtained adding 2148399653 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1452600769 + 695798884 = 38113^2 + 26378^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148399653 - 2⁴ = 2148399637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2148399623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074199826 + 1074199827.

It is an arithmetic number, because the mean of its divisors is an integer number (1074199827).

Almost surely, 2^2148399653 is an apocalyptic number.

It is an amenable number.

2148399653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148399653 is an equidigital number, since it uses as much as digits as its factorization.

2148399653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 50.

The square root of 2148399653 is about 46350.8322794748. The cubic root of 2148399653 is about 1290.3425673149.

The spelling of 2148399653 in words is "two billion, one hundred forty-eight million, three hundred ninety-nine thousand, six hundred fifty-three".