18740272829 has 2 divisors, whose sum is σ = 18740272830. Its totient is φ = 18740272828.

The previous prime is 18740272819. The next prime is 18740272913. The reversal of 18740272829 is 92827204781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12435595225 + 6304677604 = 111515^2 + 79402^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18740272829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18740272819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9370136414 + 9370136415.

It is an arithmetic number, because the mean of its divisors is an integer number (9370136415).

Almost surely, 2^18740272829 is an apocalyptic number.

It is an amenable number.

18740272829 is a deficient number, since it is larger than the sum of its proper divisors (1).

18740272829 is an equidigital number, since it uses as much as digits as its factorization.

18740272829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 903168, while the sum is 50.

The spelling of 18740272829 in words is "eighteen billion, seven hundred forty million, two hundred seventy-two thousand, eight hundred twenty-nine".