1382856491 has 4 divisors (see below), whose sum is σ = 1392950472. Its totient is φ = 1372762512.

The previous prime is 1382856413. The next prime is 1382856511. The reversal of 1382856491 is 1946582831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1382856491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1382856191) 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 3 ways as a sum of consecutive naturals, for example, 5046785 + ... + 5047058.

It is an arithmetic number, because the mean of its divisors is an integer number (348237618).

Almost surely, 2^1382856491 is an apocalyptic number.

1382856491 is a deficient number, since it is larger than the sum of its proper divisors (10093981).

1382856491 is a wasteful number, since it uses less digits than its factorization.

1382856491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10093980.

The product of its digits is 414720, while the sum is 47.

The square root of 1382856491 is about 37186.7784434199. The cubic root of 1382856491 is about 1114.1039248324.

The spelling of 1382856491 in words is "one billion, three hundred eighty-two million, eight hundred fifty-six thousand, four hundred ninety-one".