3821900549 has 2 divisors, whose sum is σ = 3821900550. Its totient is φ = 3821900548.

The previous prime is 3821900531. The next prime is 3821900557. The reversal of 3821900549 is 9450091283.

3821900549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3723196324 + 98704225 = 61018^2 + 9935^2 .

It is a cyclic number.

It is not a de Polignac number, because 3821900549 - 2²⁰ = 3820851973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3821900519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1910950274 + 1910950275.

It is an arithmetic number, because the mean of its divisors is an integer number (1910950275).

Almost surely, 2^3821900549 is an apocalyptic number.

It is an amenable number.

3821900549 is a deficient number, since it is larger than the sum of its proper divisors (1).

3821900549 is an equidigital number, since it uses as much as digits as its factorization.

3821900549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 3821900549 is about 61821.5217298960. The cubic root of 3821900549 is about 1563.4828698992.

The spelling of 3821900549 in words is "three billion, eight hundred twenty-one million, nine hundred thousand, five hundred forty-nine".