149317619791 has 2 divisors, whose sum is σ = 149317619792. Its totient is φ = 149317619790.

The previous prime is 149317619753. The next prime is 149317619807. The reversal of 149317619791 is 197916713941.

It is a strong prime.

It is an emirp because it is prime and its reverse (197916713941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149317619791 - 2³³ = 140727685199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149317614791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74658809895 + 74658809896.

It is an arithmetic number, because the mean of its divisors is an integer number (74658809896).

Almost surely, 2^149317619791 is an apocalyptic number.

149317619791 is a deficient number, since it is larger than the sum of its proper divisors (1).

149317619791 is an equidigital number, since it uses as much as digits as its factorization.

149317619791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2571912, while the sum is 58.

The spelling of 149317619791 in words is "one hundred forty-nine billion, three hundred seventeen million, six hundred nineteen thousand, seven hundred ninety-one".