1825138 has 8 divisors (see below), whose sum is σ = 3128832. Its totient is φ = 782196.

The previous prime is 1825129. The next prime is 1825139. The reversal of 1825138 is 8315281.

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

It is a super-2 number, since 2×1825138² = 6662257438088, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1825139) 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 in 3 ways as a sum of consecutive naturals, for example, 65170 + ... + 65197.

It is an arithmetic number, because the mean of its divisors is an integer number (391104).

2^1825138 is an apocalyptic number.

1825138 is a deficient number, since it is larger than the sum of its proper divisors (1303694).

1825138 is a wasteful number, since it uses less digits than its factorization.

1825138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130376.

The product of its digits is 1920, while the sum is 28.

The square root of 1825138 is about 1350.9766837366. The cubic root of 1825138 is about 122.2076995907.

The spelling of 1825138 in words is "one million, eight hundred twenty-five thousand, one hundred thirty-eight".