91848102149 has 2 divisors, whose sum is σ = 91848102150. Its totient is φ = 91848102148.

The previous prime is 91848102053. The next prime is 91848102193. The reversal of 91848102149 is 94120184819.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80965857025 + 10882245124 = 284545^2 + 104318^2 .

It is an emirp because it is prime and its reverse (94120184819) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91848102149 - 2²⁸ = 91579666693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91848102949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45924051074 + 45924051075.

It is an arithmetic number, because the mean of its divisors is an integer number (45924051075).

Almost surely, 2^91848102149 is an apocalyptic number.

It is an amenable number.

91848102149 is a deficient number, since it is larger than the sum of its proper divisors (1).

91848102149 is an equidigital number, since it uses as much as digits as its factorization.

91848102149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 47.

The spelling of 91848102149 in words is "ninety-one billion, eight hundred forty-eight million, one hundred two thousand, one hundred forty-nine".