8738086691 has 2 divisors, whose sum is σ = 8738086692. Its totient is φ = 8738086690.

The previous prime is 8738086633. The next prime is 8738086723. The reversal of 8738086691 is 1966808378.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8738086691 - 2¹⁸ = 8737824547 is a prime.

It is not a weakly prime, because it can be changed into another prime (8738086391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4369043345 + 4369043346.

It is an arithmetic number, because the mean of its divisors is an integer number (4369043346).

Almost surely, 2^8738086691 is an apocalyptic number.

8738086691 is a deficient number, since it is larger than the sum of its proper divisors (1).

8738086691 is an equidigital number, since it uses as much as digits as its factorization.

8738086691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The square root of 8738086691 is about 93477.7336642262. The cubic root of 8738086691 is about 2059.7070223835.

The spelling of 8738086691 in words is "eight billion, seven hundred thirty-eight million, eighty-six thousand, six hundred ninety-one".