1380939841 has 4 divisors (see below), whose sum is σ = 1390874800. Its totient is φ = 1371004884.

The previous prime is 1380939827. The next prime is 1380939851. The reversal of 1380939841 is 1489390831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1380939841 - 2²³ = 1372551233 is a prime.

It is a super-2 number, since 2×1380939841² = 3813989688922210562, 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 = 1380939791 and 1380939800.

It is not an unprimeable number, because it can be changed into a prime (1380939851) 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, 4967271 + ... + 4967548.

It is an arithmetic number, because the mean of its divisors is an integer number (347718700).

Almost surely, 2^1380939841 is an apocalyptic number.

It is an amenable number.

1380939841 is a deficient number, since it is larger than the sum of its proper divisors (9934959).

1380939841 is an equidigital number, since it uses as much as digits as its factorization.

1380939841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9934958.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 1380939841 is about 37160.9989236027. The cubic root of 1380939841 is about 1113.5889679062.

The spelling of 1380939841 in words is "one billion, three hundred eighty million, nine hundred thirty-nine thousand, eight hundred forty-one".