49443186391 has 2 divisors, whose sum is σ = 49443186392. Its totient is φ = 49443186390.

The previous prime is 49443186371. The next prime is 49443186413. The reversal of 49443186391 is 19368134494.

49443186391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49443186391 - 2²⁵ = 49409631959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49443186301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24721593195 + 24721593196.

It is an arithmetic number, because the mean of its divisors is an integer number (24721593196).

Almost surely, 2^49443186391 is an apocalyptic number.

49443186391 is a deficient number, since it is larger than the sum of its proper divisors (1).

49443186391 is an equidigital number, since it uses as much as digits as its factorization.

49443186391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 52.

The spelling of 49443186391 in words is "forty-nine billion, four hundred forty-three million, one hundred eighty-six thousand, three hundred ninety-one".