3809465131909 has 2 divisors, whose sum is σ = 3809465131910. Its totient is φ = 3809465131908.

The previous prime is 3809465131889. The next prime is 3809465131939. The reversal of 3809465131909 is 9091315649083.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3669025320900 + 140439811009 = 1915470^2 + 374753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3809465131909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3809465131939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1904732565954 + 1904732565955.

It is an arithmetic number, because the mean of its divisors is an integer number (1904732565955).

Almost surely, 2^{3809465131909} is an apocalyptic number.

It is an amenable number.

3809465131909 is a deficient number, since it is larger than the sum of its proper divisors (1).

3809465131909 is an equidigital number, since it uses as much as digits as its factorization.

3809465131909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6298560, while the sum is 58.

The spelling of 3809465131909 in words is "three trillion, eight hundred nine billion, four hundred sixty-five million, one hundred thirty-one thousand, nine hundred nine".