1148438 has 4 divisors (see below), whose sum is σ = 1722660. Its totient is φ = 574218.

The previous prime is 1148437. The next prime is 1148453. The reversal of 1148438 is 8348411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8348411 = 17 ⋅491083.

It is a self number, because there is not a number n which added to its sum of digits gives 1148438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287108 + ... + 287111.

It is an arithmetic number, because the mean of its divisors is an integer number (430665).

2^1148438 is an apocalyptic number.

1148438 is a deficient number, since it is larger than the sum of its proper divisors (574222).

1148438 is an equidigital number, since it uses as much as digits as its factorization.

1148438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574221.

The product of its digits is 3072, while the sum is 29.

The square root of 1148438 is about 1071.6519957524. The cubic root of 1148438 is about 104.7214993007.

The spelling of 1148438 in words is "one million, one hundred forty-eight thousand, four hundred thirty-eight".