2189538037 has 2 divisors, whose sum is σ = 2189538038. Its totient is φ = 2189538036.

The previous prime is 2189538023. The next prime is 2189538049. The reversal of 2189538037 is 7308359812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2119129156 + 70408881 = 46034^2 + 8391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2189538037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2189538007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094769018 + 1094769019.

It is an arithmetic number, because the mean of its divisors is an integer number (1094769019).

Almost surely, 2^2189538037 is an apocalyptic number.

It is an amenable number.

2189538037 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189538037 is an equidigital number, since it uses as much as digits as its factorization.

2189538037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 2189538037 is about 46792.4997943046. The cubic root of 2189538037 is about 1298.5265429989.

The spelling of 2189538037 in words is "two billion, one hundred eighty-nine million, five hundred thirty-eight thousand, thirty-seven".