91674438827 has 2 divisors, whose sum is σ = 91674438828. Its totient is φ = 91674438826.

The previous prime is 91674438781. The next prime is 91674438857. The reversal of 91674438827 is 72883447619.

It is a strong prime.

It is an emirp because it is prime and its reverse (72883447619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91674438827 - 2⁶ = 91674438763 is a prime.

It is not a weakly prime, because it can be changed into another prime (91674438857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45837219413 + 45837219414.

It is an arithmetic number, because the mean of its divisors is an integer number (45837219414).

Almost surely, 2^91674438827 is an apocalyptic number.

91674438827 is a deficient number, since it is larger than the sum of its proper divisors (1).

91674438827 is an equidigital number, since it uses as much as digits as its factorization.

91674438827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16257024, while the sum is 59.

The spelling of 91674438827 in words is "ninety-one billion, six hundred seventy-four million, four hundred thirty-eight thousand, eight hundred twenty-seven".