16374017549 has 2 divisors, whose sum is σ = 16374017550. Its totient is φ = 16374017548.

The previous prime is 16374017519. The next prime is 16374017557. The reversal of 16374017549 is 94571047361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12715945225 + 3658072324 = 112765^2 + 60482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16374017549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16374017509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8187008774 + 8187008775.

It is an arithmetic number, because the mean of its divisors is an integer number (8187008775).

Almost surely, 2^16374017549 is an apocalyptic number.

It is an amenable number.

16374017549 is a deficient number, since it is larger than the sum of its proper divisors (1).

16374017549 is an equidigital number, since it uses as much as digits as its factorization.

16374017549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 16374017549 in words is "sixteen billion, three hundred seventy-four million, seventeen thousand, five hundred forty-nine".