1538234 has 4 divisors (see below), whose sum is σ = 2307354. Its totient is φ = 769116.

The previous prime is 1538233. The next prime is 1538261. The reversal of 1538234 is 4328351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4328351 = 53 ⋅81667.

It can be written as a sum of positive squares in only one way, i.e., 1380625 + 157609 = 1175^2 + 397^2 .

It is an Ulam number.

It is a nialpdrome in base 12.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (1538233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384557 + ... + 384560.

2^1538234 is an apocalyptic number.

1538234 is a deficient number, since it is larger than the sum of its proper divisors (769120).

1538234 is an equidigital number, since it uses as much as digits as its factorization.

1538234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769119.

The product of its digits is 2880, while the sum is 26.

The square root of 1538234 is about 1240.2556188141. The cubic root of 1538234 is about 115.4358757766.

The spelling of 1538234 in words is "one million, five hundred thirty-eight thousand, two hundred thirty-four".