2133694237 has 2 divisors, whose sum is σ = 2133694238. Its totient is φ = 2133694236.

The previous prime is 2133694187. The next prime is 2133694267. The reversal of 2133694237 is 7324963312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1969495641 + 164198596 = 44379^2 + 12814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2133694237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2133694237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2133694267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066847118 + 1066847119.

It is an arithmetic number, because the mean of its divisors is an integer number (1066847119).

Almost surely, 2^2133694237 is an apocalyptic number.

It is an amenable number.

2133694237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133694237 is an equidigital number, since it uses as much as digits as its factorization.

2133694237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 40.

The square root of 2133694237 is about 46191.9282667437. The cubic root of 2133694237 is about 1287.3917688516.

The spelling of 2133694237 in words is "two billion, one hundred thirty-three million, six hundred ninety-four thousand, two hundred thirty-seven".