6844393157 has 32 divisors (see below), whose sum is σ = 8118988800. Its totient is φ = 5766692400.

The previous prime is 6844393141. The next prime is 6844393181. The reversal of 6844393157 is 7513934486.

It is not a de Polignac number, because 6844393157 - 2⁴ = 6844393141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6844393357) 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 in 31 ways as a sum of consecutive naturals, for example, 5334038 + ... + 5335320.

It is an arithmetic number, because the mean of its divisors is an integer number (253718400).

Almost surely, 2^6844393157 is an apocalyptic number.

It is an amenable number.

6844393157 is a deficient number, since it is larger than the sum of its proper divisors (1274595643).

6844393157 is a wasteful number, since it uses less digits than its factorization.

6844393157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558 (or 1544 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The square root of 6844393157 is about 82730.8476748546. The cubic root of 6844393157 is about 1898.6503024805.

The spelling of 6844393157 in words is "six billion, eight hundred forty-four million, three hundred ninety-three thousand, one hundred fifty-seven".