75193438349 has 2 divisors, whose sum is σ = 75193438350. Its totient is φ = 75193438348.

The previous prime is 75193438303. The next prime is 75193438357. The reversal of 75193438349 is 94383439157.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70718764900 + 4474673449 = 265930^2 + 66893^2 .

It is a cyclic number.

It is not a de Polignac number, because 75193438349 - 2²⁰ = 75192389773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75193438294 and 75193438303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75193438379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37596719174 + 37596719175.

It is an arithmetic number, because the mean of its divisors is an integer number (37596719175).

Almost surely, 2^75193438349 is an apocalyptic number.

It is an amenable number.

75193438349 is a deficient number, since it is larger than the sum of its proper divisors (1).

75193438349 is an equidigital number, since it uses as much as digits as its factorization.

75193438349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 56.

The spelling of 75193438349 in words is "seventy-five billion, one hundred ninety-three million, four hundred thirty-eight thousand, three hundred forty-nine".