1825621834 has 4 divisors (see below), whose sum is σ = 2738432754. Its totient is φ = 912810916.

The previous prime is 1825621813. The next prime is 1825621841. The reversal of 1825621834 is 4381265281.

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., 1197367609 + 628254225 = 34603^2 + 25065^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456405457 + ... + 456405460.

Almost surely, 2^1825621834 is an apocalyptic number.

1825621834 is a deficient number, since it is larger than the sum of its proper divisors (912810920).

1825621834 is an equidigital number, since it uses as much as digits as its factorization.

1825621834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912810919.

The product of its digits is 92160, while the sum is 40.

The square root of 1825621834 is about 42727.2961232044. The cubic root of 1825621834 is about 1222.1849749855.

The spelling of 1825621834 in words is "one billion, eight hundred twenty-five million, six hundred twenty-one thousand, eight hundred thirty-four".