1356831019 has 8 divisors (see below), whose sum is σ = 1428815520. Its totient is φ = 1285929216.

The previous prime is 1356831017. The next prime is 1356831023. The reversal of 1356831019 is 9101386531.

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 1356831019 - 2¹ = 1356831017 is a prime.

It is a super-2 number, since 2×1356831019² = 3681980828241156722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1356831011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 268102 + ... + 273115.

It is an arithmetic number, because the mean of its divisors is an integer number (178601940).

Almost surely, 2^1356831019 is an apocalyptic number.

1356831019 is a deficient number, since it is larger than the sum of its proper divisors (71984501).

1356831019 is a wasteful number, since it uses less digits than its factorization.

1356831019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541349.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 1356831019 is about 36835.1872399205. The cubic root of 1356831019 is about 1107.0704393578.

The spelling of 1356831019 in words is "one billion, three hundred fifty-six million, eight hundred thirty-one thousand, nineteen".