3909788118149 has 2 divisors, whose sum is σ = 3909788118150. Its totient is φ = 3909788118148.

The previous prime is 3909788118107. The next prime is 3909788118263. The reversal of 3909788118149 is 9418118879093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2413728889924 + 1496059228225 = 1553618^2 + 1223135^2 .

It is a cyclic number.

It is not a de Polignac number, because 3909788118149 - 2²⁸ = 3909519682693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3909788718149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1954894059074 + 1954894059075.

It is an arithmetic number, because the mean of its divisors is an integer number (1954894059075).

Almost surely, 2^{3909788118149} is an apocalyptic number.

It is an amenable number.

3909788118149 is a deficient number, since it is larger than the sum of its proper divisors (1).

3909788118149 is an equidigital number, since it uses as much as digits as its factorization.

3909788118149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31352832, while the sum is 68.

The spelling of 3909788118149 in words is "three trillion, nine hundred nine billion, seven hundred eighty-eight million, one hundred eighteen thousand, one hundred forty-nine".