1356831744 has 88 divisors (see below), whose sum is σ = 3829331088. Its totient is φ = 425656320.

The previous prime is 1356831739. The next prime is 1356831779. The reversal of 1356831744 is 4471386531.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1356831696 and 1356831705.

It is a congruent number.

It is an unprimeable number.

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, 39234 + ... + 65214.

It is an arithmetic number, because the mean of its divisors is an integer number (43515126).

Almost surely, 2^1356831744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1356831744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1914665544).

1356831744 is an abundant number, since it is smaller than the sum of its proper divisors (2472499344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1356831744 is a wasteful number, since it uses less digits than its factorization.

1356831744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26021 (or 26003 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 1356831744 is about 36835.1970810528. The cubic root of 1356831744 is about 1107.0706365393.

The spelling of 1356831744 in words is "one billion, three hundred fifty-six million, eight hundred thirty-one thousand, seven hundred forty-four".