16381782829 has 2 divisors, whose sum is σ = 16381782830. Its totient is φ = 16381782828.

The previous prime is 16381782803. The next prime is 16381782847. The reversal of 16381782829 is 92828718361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13569920100 + 2811862729 = 116490^2 + 53027^2 .

It is a cyclic number.

It is not a de Polignac number, because 16381782829 - 2⁹ = 16381782317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16381782829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16381782869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8190891414 + 8190891415.

It is an arithmetic number, because the mean of its divisors is an integer number (8190891415).

Almost surely, 2^16381782829 is an apocalyptic number.

It is an amenable number.

16381782829 is a deficient number, since it is larger than the sum of its proper divisors (1).

16381782829 is an equidigital number, since it uses as much as digits as its factorization.

16381782829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 55.

The spelling of 16381782829 in words is "sixteen billion, three hundred eighty-one million, seven hundred eighty-two thousand, eight hundred twenty-nine".