1825474638 has 16 divisors (see below), whose sum is σ = 3931791696. Its totient is φ = 561684480.

The previous prime is 1825474627. The next prime is 1825474709. The reversal of 1825474638 is 8364745281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11701683 + ... + 11701838.

It is an arithmetic number, because the mean of its divisors is an integer number (245736981).

Almost surely, 2^1825474638 is an apocalyptic number.

1825474638 is an abundant number, since it is smaller than the sum of its proper divisors (2106317058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1825474638 is a wasteful number, since it uses less digits than its factorization.

1825474638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23403539.

The product of its digits is 1290240, while the sum is 48.

The square root of 1825474638 is about 42725.5735830427. The cubic root of 1825474638 is about 1222.1521267122.

The spelling of 1825474638 in words is "one billion, eight hundred twenty-five million, four hundred seventy-four thousand, six hundred thirty-eight".