3687326694749 has 2 divisors, whose sum is σ = 3687326694750. Its totient is φ = 3687326694748.

The previous prime is 3687326694731. The next prime is 3687326694767. The reversal of 3687326694749 is 9474966237863.

It is a balanced prime because it is at equal distance from previous prime (3687326694731) and next prime (3687326694767).

It can be written as a sum of positive squares in only one way, i.e., 3181211124025 + 506115570724 = 1783595^2 + 711418^2 .

It is a cyclic number.

It is not a de Polignac number, because 3687326694749 - 2¹⁶ = 3687326629213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3687326697749) 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, 1843663347374 + 1843663347375.

It is an arithmetic number, because the mean of its divisors is an integer number (1843663347375).

Almost surely, 2^{3687326694749} is an apocalyptic number.

It is an amenable number.

3687326694749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3687326694749 is an equidigital number, since it uses as much as digits as its factorization.

3687326694749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1975228416, while the sum is 74.

The spelling of 3687326694749 in words is "three trillion, six hundred eighty-seven billion, three hundred twenty-six million, six hundred ninety-four thousand, seven hundred forty-nine".