1380819 has 8 divisors (see below), whose sum is σ = 2008512. Its totient is φ = 836840.

The previous prime is 1380817. The next prime is 1380853. The reversal of 1380819 is 9180831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1380819 - 2¹ = 1380817 is a prime.

It is a super-2 number, since 2×1380819² = 3813322221522, which contains 22 as substring.

1380819 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1380811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20889 + ... + 20954.

It is an arithmetic number, because the mean of its divisors is an integer number (251064).

2^1380819 is an apocalyptic number.

1380819 is a deficient number, since it is larger than the sum of its proper divisors (627693).

1380819 is a wasteful number, since it uses less digits than its factorization.

1380819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41857.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1380819 is about 1175.0825502917. The cubic root of 1380819 is about 111.3556484925.

The spelling of 1380819 in words is "one million, three hundred eighty thousand, eight hundred nineteen".