2133543749 has 2 divisors, whose sum is σ = 2133543750. Its totient is φ = 2133543748.

The previous prime is 2133543719. The next prime is 2133543767. The reversal of 2133543749 is 9473453312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1154980225 + 978563524 = 33985^2 + 31282^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133543749 - 2²⁸ = 1865108293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2133543719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066771874 + 1066771875.

It is an arithmetic number, because the mean of its divisors is an integer number (1066771875).

Almost surely, 2^2133543749 is an apocalyptic number.

It is an amenable number.

2133543749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133543749 is an equidigital number, since it uses as much as digits as its factorization.

2133543749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 41.

The square root of 2133543749 is about 46190.2992954148. The cubic root of 2133543749 is about 1287.3615018520.

The spelling of 2133543749 in words is "two billion, one hundred thirty-three million, five hundred forty-three thousand, seven hundred forty-nine".