189724816339 has 2 divisors, whose sum is σ = 189724816340. Its totient is φ = 189724816338.

The previous prime is 189724816297. The next prime is 189724816367. The reversal of 189724816339 is 933618427981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189724816339 - 2⁹ = 189724815827 is a prime.

It is not a weakly prime, because it can be changed into another prime (189724814339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94862408169 + 94862408170.

It is an arithmetic number, because the mean of its divisors is an integer number (94862408170).

Almost surely, 2^189724816339 is an apocalyptic number.

189724816339 is a deficient number, since it is larger than the sum of its proper divisors (1).

189724816339 is an equidigital number, since it uses as much as digits as its factorization.

189724816339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 61.

The spelling of 189724816339 in words is "one hundred eighty-nine billion, seven hundred twenty-four million, eight hundred sixteen thousand, three hundred thirty-nine".