1078381 has 4 divisors (see below), whose sum is σ = 1084000. Its totient is φ = 1072764.

The previous prime is 1078373. The next prime is 1078387. The reversal of 1078381 is 1838701.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1838701 = 1103 ⋅1667.

It is a cyclic number.

It is not a de Polignac number, because 1078381 - 2³ = 1078373 is a prime.

It is a super-2 number, since 2×1078381² = 2325811162322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078387) 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, 2511 + ... + 2908.

It is an arithmetic number, because the mean of its divisors is an integer number (271000).

2^1078381 is an apocalyptic number.

It is an amenable number.

1078381 is a deficient number, since it is larger than the sum of its proper divisors (5619).

1078381 is an equidigital number, since it uses as much as digits as its factorization.

1078381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5618.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1078381 is about 1038.4512506613. The cubic root of 1078381 is about 102.5472635491.

The spelling of 1078381 in words is "one million, seventy-eight thousand, three hundred eighty-one".