1829138 has 4 divisors (see below), whose sum is σ = 2743710. Its totient is φ = 914568.

The previous prime is 1829137. The next prime is 1829141. The reversal of 1829138 is 8319281.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1545049 + 284089 = 1243^2 + 533^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1829137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457283 + ... + 457286.

2^1829138 is an apocalyptic number.

1829138 is a deficient number, since it is larger than the sum of its proper divisors (914572).

1829138 is an equidigital number, since it uses as much as digits as its factorization.

1829138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914571.

The product of its digits is 3456, while the sum is 32.

The square root of 1829138 is about 1352.4562839515. The cubic root of 1829138 is about 122.2969118626.

The spelling of 1829138 in words is "one million, eight hundred twenty-nine thousand, one hundred thirty-eight".