1380481 has 4 divisors (see below), whose sum is σ = 1382832. Its totient is φ = 1378132.

The previous prime is 1380469. The next prime is 1380499. The reversal of 1380481 is 1840831.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1840831 = 281 ⋅6551.

It is a cyclic number.

It is not a de Polignac number, because 1380481 - 2⁹ = 1379969 is a prime.

It is a super-2 number, since 2×1380481² = 3811455582722, which contains 22 as substring.

It is a Duffinian number.

1380481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1380781) 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, 570 + ... + 1756.

It is an arithmetic number, because the mean of its divisors is an integer number (345708).

2^1380481 is an apocalyptic number.

It is an amenable number.

1380481 is a deficient number, since it is larger than the sum of its proper divisors (2351).

1380481 is a wasteful number, since it uses less digits than its factorization.

1380481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1380481 is about 1174.9387218064. The cubic root of 1380481 is about 111.3465617885.

The spelling of 1380481 in words is "one million, three hundred eighty thousand, four hundred eighty-one".