74193812837 has 2 divisors, whose sum is σ = 74193812838. Its totient is φ = 74193812836.

The previous prime is 74193812779. The next prime is 74193812839. The reversal of 74193812837 is 73821839147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67613520676 + 6580292161 = 260026^2 + 81119^2 .

It is a cyclic number.

It is not a de Polignac number, because 74193812837 - 2²⁸ = 73925377381 is a prime.

Together with 74193812839, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74193812839) 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, 37096906418 + 37096906419.

It is an arithmetic number, because the mean of its divisors is an integer number (37096906419).

Almost surely, 2^74193812837 is an apocalyptic number.

It is an amenable number.

74193812837 is a deficient number, since it is larger than the sum of its proper divisors (1).

74193812837 is an equidigital number, since it uses as much as digits as its factorization.

74193812837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 53.

The spelling of 74193812837 in words is "seventy-four billion, one hundred ninety-three million, eight hundred twelve thousand, eight hundred thirty-seven".