1801333650 has 48 divisors (see below), whose sum is σ = 4513398624. Its totient is φ = 475399680.

The previous prime is 1801333621. The next prime is 1801333669. The reversal of 1801333650 is 563331081.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47352 + ... + 76451.

It is an arithmetic number, because the mean of its divisors is an integer number (94029138).

Almost surely, 2^1801333650 is an apocalyptic number.

1801333650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1801333650 is an abundant number, since it is smaller than the sum of its proper divisors (2712064974).

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

1801333650 is a wasteful number, since it uses less digits than its factorization.

1801333650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123915 (or 123910 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1801333650 is about 42442.1211769629. The cubic root of 1801333650 is about 1216.7407519367.

The spelling of 1801333650 in words is "one billion, eight hundred one million, three hundred thirty-three thousand, six hundred fifty".