1931268113 has 8 divisors (see below), whose sum is σ = 1999967976. Its totient is φ = 1863763200.

The previous prime is 1931268109. The next prime is 1931268121. The reversal of 1931268113 is 3118621391.

It can be written as a sum of positive squares in 4 ways, for example, as 96687889 + 1834580224 = 9833^2 + 42832^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1931268113 - 2² = 1931268109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1931268133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295448 + ... + 301913.

It is an arithmetic number, because the mean of its divisors is an integer number (249995997).

Almost surely, 2^1931268113 is an apocalyptic number.

It is an amenable number.

1931268113 is a deficient number, since it is larger than the sum of its proper divisors (68699863).

1931268113 is an equidigital number, since it uses as much as digits as its factorization.

1931268113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597475.

The product of its digits is 7776, while the sum is 35.

The square root of 1931268113 is about 43946.1956601479. The cubic root of 1931268113 is about 1245.3196951085.

The spelling of 1931268113 in words is "one billion, nine hundred thirty-one million, two hundred sixty-eight thousand, one hundred thirteen".