1382865139 has 4 divisors (see below), whose sum is σ = 1383352024. Its totient is φ = 1382378256.

The previous prime is 1382865137. The next prime is 1382865157. The reversal of 1382865139 is 9315682831.

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

It is a cyclic number.

It is not a de Polignac number, because 1382865139 - 2¹ = 1382865137 is a prime.

It is a super-2 number, since 2×1382865139² = 3824631985322978642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1382865131) 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, 239157 + ... + 244870.

It is an arithmetic number, because the mean of its divisors is an integer number (345838006).

Almost surely, 2^1382865139 is an apocalyptic number.

1382865139 is a deficient number, since it is larger than the sum of its proper divisors (486885).

1382865139 is an equidigital number, since it uses as much as digits as its factorization.

1382865139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486884.

The product of its digits is 311040, while the sum is 46.

The square root of 1382865139 is about 37186.8947211245. The cubic root of 1382865139 is about 1114.1062472596.

The spelling of 1382865139 in words is "one billion, three hundred eighty-two million, eight hundred sixty-five thousand, one hundred thirty-nine".