3191385386 has 24 divisors (see below), whose sum is σ = 5571149220. Its totient is φ = 1367120832.

The previous prime is 3191385377. The next prime is 3191385409. The reversal of 3191385386 is 6835831913.

It can be written as a sum of positive squares in 2 ways, for example, as 2493104761 + 698280625 = 49931^2 + 26425^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3191385386.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 261476 + ... + 273408.

Almost surely, 2^3191385386 is an apocalyptic number.

3191385386 is a deficient number, since it is larger than the sum of its proper divisors (2379763834).

3191385386 is a wasteful number, since it uses less digits than its factorization.

3191385386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14678 (or 14671 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 3191385386 is about 56492.3480305076. The cubic root of 3191385386 is about 1472.2890565008.

The spelling of 3191385386 in words is "three billion, one hundred ninety-one million, three hundred eighty-five thousand, three hundred eighty-six".