13813434487 has 2 divisors, whose sum is σ = 13813434488. Its totient is φ = 13813434486.

The previous prime is 13813434449. The next prime is 13813434497. The reversal of 13813434487 is 78443431831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13813434487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13813434497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6906717243 + 6906717244.

It is an arithmetic number, because the mean of its divisors is an integer number (6906717244).

Almost surely, 2^13813434487 is an apocalyptic number.

13813434487 is a deficient number, since it is larger than the sum of its proper divisors (1).

13813434487 is an equidigital number, since it uses as much as digits as its factorization.

13813434487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 46.

The spelling of 13813434487 in words is "thirteen billion, eight hundred thirteen million, four hundred thirty-four thousand, four hundred eighty-seven".