1380810239 has 4 divisors (see below), whose sum is σ = 1382127600. Its totient is φ = 1379492880.

The previous prime is 1380810209. The next prime is 1380810247. The reversal of 1380810239 is 9320180831.

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 1380810239 - 2¹² = 1380806143 is a prime.

It is a super-2 number, since 2×1380810239² = 3813273832254474242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1380810199 and 1380810208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380810209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657107 + ... + 659204.

It is an arithmetic number, because the mean of its divisors is an integer number (345531900).

Almost surely, 2^1380810239 is an apocalyptic number.

1380810239 is a deficient number, since it is larger than the sum of its proper divisors (1317361).

1380810239 is a wasteful number, since it uses less digits than its factorization.

1380810239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317360.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1380810239 is about 37159.2550921032. The cubic root of 1380810239 is about 1113.5541298275.

The spelling of 1380810239 in words is "one billion, three hundred eighty million, eight hundred ten thousand, two hundred thirty-nine".