1803166656 has 56 divisors (see below), whose sum is σ = 4872410880. Its totient is φ = 588264192.

The previous prime is 1803166637. The next prime is 1803166657. The reversal of 1803166656 is 6566613081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1803166657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90886 + ... + 108933.

Almost surely, 2^1803166656 is an apocalyptic number.

1803166656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1803166656 is an abundant number, since it is smaller than the sum of its proper divisors (3069244224).

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

1803166656 is a wasteful number, since it uses less digits than its factorization.

1803166656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199881 (or 199871 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 1803166656 is about 42463.7098709004. The cubic root of 1803166656 is about 1217.1533234821.

The spelling of 1803166656 in words is "one billion, eight hundred three million, one hundred sixty-six thousand, six hundred fifty-six".