1803130556 has 12 divisors (see below), whose sum is σ = 3175578168. Its totient is φ = 895822512.

The previous prime is 1803130499. The next prime is 1803130561. The reversal of 1803130556 is 6550313081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1434986 + ... + 1436241.

It is an arithmetic number, because the mean of its divisors is an integer number (264631514).

Almost surely, 2^1803130556 is an apocalyptic number.

It is an amenable number.

1803130556 is a deficient number, since it is larger than the sum of its proper divisors (1372447612).

1803130556 is a wasteful number, since it uses less digits than its factorization.

1803130556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871388 (or 2871386 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1803130556 is about 42463.2847999304. The cubic root of 1803130556 is about 1217.1452008223.

The spelling of 1803130556 in words is "one billion, eight hundred three million, one hundred thirty thousand, five hundred fifty-six".