1438081 has 8 divisors (see below), whose sum is σ = 1575720. Its totient is φ = 1306368.

The previous prime is 1438069. The next prime is 1438093. The reversal of 1438081 is 1808341.

It is an interprime number because it is at equal distance from previous prime (1438069) and next prime (1438093).

It can be written as a sum of positive squares in 4 ways, for example, as 919681 + 518400 = 959^2 + 720^2 .

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

It is a 6-Lehmer number, since φ(1438081) divides (1438081-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 1438081 - 2¹³ = 1429889 is a prime.

It is a super-2 number, since 2×1438081² = 4136153925122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1438001) 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, 966 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (196965).

2^1438081 is an apocalyptic number.

It is an amenable number.

1438081 is a deficient number, since it is larger than the sum of its proper divisors (137639).

1438081 is a wasteful number, since it uses less digits than its factorization.

1438081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963.

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

The square root of 1438081 is about 1199.2001501001. The cubic root of 1438081 is about 112.8741387181.

The spelling of 1438081 in words is "one million, four hundred thirty-eight thousand, eighty-one".