1331395829 has 16 divisors (see below), whose sum is σ = 1434888000. Its totient is φ = 1232810880.

The previous prime is 1331395811. The next prime is 1331395831. The reversal of 1331395829 is 9285931331.

It is a de Polignac number, because none of the positive numbers 2^k-1331395829 is a prime.

It is a super-2 number, since 2×1331395829² = 3545229706957194482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331395829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331395889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60662 + ... + 79640.

It is an arithmetic number, because the mean of its divisors is an integer number (89680500).

Almost surely, 2^1331395829 is an apocalyptic number.

It is an amenable number.

1331395829 is a deficient number, since it is larger than the sum of its proper divisors (103492171).

1331395829 is a wasteful number, since it uses less digits than its factorization.

1331395829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19108.

The product of its digits is 174960, while the sum is 44.

The square root of 1331395829 is about 36488.2971512785. The cubic root of 1331395829 is about 1100.1090329938.

The spelling of 1331395829 in words is "one billion, three hundred thirty-one million, three hundred ninety-five thousand, eight hundred twenty-nine".