7049731891 has 2 divisors, whose sum is σ = 7049731892. Its totient is φ = 7049731890.

The previous prime is 7049731873. The next prime is 7049731901. The reversal of 7049731891 is 1981379407.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7049731891 - 2⁵ = 7049731859 is a prime.

It is not a weakly prime, because it can be changed into another prime (7049731811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3524865945 + 3524865946.

It is an arithmetic number, because the mean of its divisors is an integer number (3524865946).

Almost surely, 2^7049731891 is an apocalyptic number.

7049731891 is a deficient number, since it is larger than the sum of its proper divisors (1).

7049731891 is an equidigital number, since it uses as much as digits as its factorization.

7049731891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 7049731891 is about 83962.6815376927. The cubic root of 7049731891 is about 1917.4506721019.

The spelling of 7049731891 in words is "seven billion, forty-nine million, seven hundred thirty-one thousand, eight hundred ninety-one".