1838401 has 2 divisors, whose sum is σ = 1838402. Its totient is φ = 1838400.

The previous prime is 1838377. The next prime is 1838407. The reversal of 1838401 is 1048381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1157776 + 680625 = 1076^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 1838401 - 2¹⁵ = 1805633 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1838407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919200 + 919201.

It is an arithmetic number, because the mean of its divisors is an integer number (919201).

2^1838401 is an apocalyptic number.

It is an amenable number.

1838401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838401 is an equidigital number, since it uses as much as digits as its factorization.

1838401 is an evil number, because the sum of its binary digits is even.

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

The square root of 1838401 is about 1355.8764692995. The cubic root of 1838401 is about 122.5030070066.

The spelling of 1838401 in words is "one million, eight hundred thirty-eight thousand, four hundred one".