83842370489 has 2 divisors, whose sum is σ = 83842370490. Its totient is φ = 83842370488.

The previous prime is 83842370471. The next prime is 83842370501. The reversal of 83842370489 is 98407324838.

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., 46361410489 + 37480960000 = 215317^2 + 193600^2 .

It is a cyclic number.

It is not a de Polignac number, because 83842370489 - 2¹² = 83842366393 is a prime.

It is not a weakly prime, because it can be changed into another prime (83842370389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41921185244 + 41921185245.

It is an arithmetic number, because the mean of its divisors is an integer number (41921185245).

Almost surely, 2^83842370489 is an apocalyptic number.

It is an amenable number.

83842370489 is a deficient number, since it is larger than the sum of its proper divisors (1).

83842370489 is an equidigital number, since it uses as much as digits as its factorization.

83842370489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 83842370489 in words is "eighty-three billion, eight hundred forty-two million, three hundred seventy thousand, four hundred eighty-nine".