37946782099 has 2 divisors, whose sum is σ = 37946782100. Its totient is φ = 37946782098.

The previous prime is 37946782087. The next prime is 37946782117. The reversal of 37946782099 is 99028764973.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37946782099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 37946782099.

It is not a weakly prime, because it can be changed into another prime (37946782009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18973391049 + 18973391050.

It is an arithmetic number, because the mean of its divisors is an integer number (18973391050).

Almost surely, 2^37946782099 is an apocalyptic number.

37946782099 is a deficient number, since it is larger than the sum of its proper divisors (1).

37946782099 is an equidigital number, since it uses as much as digits as its factorization.

37946782099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41150592, while the sum is 64.

The spelling of 37946782099 in words is "thirty-seven billion, nine hundred forty-six million, seven hundred eighty-two thousand, ninety-nine".