9378463691 has 2 divisors, whose sum is σ = 9378463692. Its totient is φ = 9378463690.

The previous prime is 9378463687. The next prime is 9378463747. The reversal of 9378463691 is 1963648739.

It is an a-pointer prime, because the next prime (9378463747) can be obtained adding 9378463691 to its sum of digits (56).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9378463691 - 2² = 9378463687 is a prime.

It is not a weakly prime, because it can be changed into another prime (9378468691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4689231845 + 4689231846.

It is an arithmetic number, because the mean of its divisors is an integer number (4689231846).

Almost surely, 2^9378463691 is an apocalyptic number.

9378463691 is a deficient number, since it is larger than the sum of its proper divisors (1).

9378463691 is an equidigital number, since it uses as much as digits as its factorization.

9378463691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 56.

The square root of 9378463691 is about 96842.4684268219. The cubic root of 9378463691 is about 2108.8413104034.

The spelling of 9378463691 in words is "nine billion, three hundred seventy-eight million, four hundred sixty-three thousand, six hundred ninety-one".