3216137489 has 2 divisors, whose sum is σ = 3216137490. Its totient is φ = 3216137488.

The previous prime is 3216137473. The next prime is 3216137531. The reversal of 3216137489 is 9847316123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1972869889 + 1243267600 = 44417^2 + 35260^2 .

It is a cyclic number.

It is not a de Polignac number, because 3216137489 - 2⁴ = 3216137473 is a prime.

It is not a weakly prime, because it can be changed into another prime (3216137389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608068744 + 1608068745.

It is an arithmetic number, because the mean of its divisors is an integer number (1608068745).

Almost surely, 2^3216137489 is an apocalyptic number.

It is an amenable number.

3216137489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216137489 is an equidigital number, since it uses as much as digits as its factorization.

3216137489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 3216137489 is about 56710.9997178678. Note that the first 3 decimals coincide. The cubic root of 3216137489 is about 1476.0855728045.

The spelling of 3216137489 in words is "three billion, two hundred sixteen million, one hundred thirty-seven thousand, four hundred eighty-nine".