1378481 has 8 divisors (see below), whose sum is σ = 1499904. Its totient is φ = 1259280.

The previous prime is 1378441. The next prime is 1378499. The reversal of 1378481 is 1848731.

1378481 = T₄₅₄ + T₄₅₅ + ... + T₄₆₆.

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 1378481 - 2¹⁰ = 1377457 is a prime.

It is a super-2 number, since 2×1378481² = 3800419734722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378441) 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, 896 + ... + 1886.

It is an arithmetic number, because the mean of its divisors is an integer number (187488).

2^1378481 is an apocalyptic number.

It is an amenable number.

1378481 is a deficient number, since it is larger than the sum of its proper divisors (121423).

1378481 is a wasteful number, since it uses less digits than its factorization.

1378481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111.

The product of its digits is 5376, while the sum is 32.

The square root of 1378481 is about 1174.0873051013. The cubic root of 1378481 is about 111.2927639325.

The spelling of 1378481 in words is "one million, three hundred seventy-eight thousand, four hundred eighty-one".