1825990 has 8 divisors (see below), whose sum is σ = 3286800. Its totient is φ = 730392.

The previous prime is 1825969. The next prime is 1826003. The reversal of 1825990 is 995281.

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

It is a congruent number.

It is an unprimeable number.

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, 91290 + ... + 91309.

It is an arithmetic number, because the mean of its divisors is an integer number (410850).

2^1825990 is an apocalyptic number.

1825990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1825990 is a deficient number, since it is larger than the sum of its proper divisors (1460810).

1825990 is a wasteful number, since it uses less digits than its factorization.

1825990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182606.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1825990 is about 1351.2919743712. The cubic root of 1825990 is about 122.2267127215.

The spelling of 1825990 in words is "one million, eight hundred twenty-five thousand, nine hundred ninety".