2103421549 has 2 divisors, whose sum is σ = 2103421550. Its totient is φ = 2103421548.

The previous prime is 2103421519. The next prime is 2103421589. The reversal of 2103421549 is 9451243012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2090135524 + 13286025 = 45718^2 + 3645^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103421549 - 2⁹ = 2103421037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2103421549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103421519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051710774 + 1051710775.

It is an arithmetic number, because the mean of its divisors is an integer number (1051710775).

Almost surely, 2^2103421549 is an apocalyptic number.

It is an amenable number.

2103421549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103421549 is an equidigital number, since it uses as much as digits as its factorization.

2103421549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2103421549 is about 45863.0739157331. The cubic root of 2103421549 is about 1281.2742740148.

The spelling of 2103421549 in words is "two billion, one hundred three million, four hundred twenty-one thousand, five hundred forty-nine".