2103823549 has 2 divisors, whose sum is σ = 2103823550. Its totient is φ = 2103823548.

The previous prime is 2103823537. The next prime is 2103823577. The reversal of 2103823549 is 9453283012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1570536900 + 533286649 = 39630^2 + 23093^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103823549 - 2¹⁷ = 2103692477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103833549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051911774 + 1051911775.

It is an arithmetic number, because the mean of its divisors is an integer number (1051911775).

Almost surely, 2^2103823549 is an apocalyptic number.

It is an amenable number.

2103823549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103823549 is an equidigital number, since it uses as much as digits as its factorization.

2103823549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2103823549 is about 45867.4563170883. The cubic root of 2103823549 is about 1281.3558933252.

The spelling of 2103823549 in words is "two billion, one hundred three million, eight hundred twenty-three thousand, five hundred forty-nine".