1380838 has 4 divisors (see below), whose sum is σ = 2071260. Its totient is φ = 690418.

The previous prime is 1380817. The next prime is 1380853. The reversal of 1380838 is 8380831.

1380838 is nontrivially palindromic in base 5.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345208 + ... + 345211.

It is an arithmetic number, because the mean of its divisors is an integer number (517815).

2^1380838 is an apocalyptic number.

1380838 is a deficient number, since it is larger than the sum of its proper divisors (690422).

1380838 is an equidigital number, since it uses as much as digits as its factorization.

1380838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690421.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1380838 is about 1175.0906348023. The cubic root of 1380838 is about 111.3561592395.

The spelling of 1380838 in words is "one million, three hundred eighty thousand, eight hundred thirty-eight".