1801133802 has 24 divisors (see below), whose sum is σ = 4202646084. Its totient is φ = 554194944.

The previous prime is 1801133801. The next prime is 1801133809. The reversal of 1801133802 is 2083311081.

It can be written as a sum of positive squares in 2 ways, for example, as 1353430521 + 447703281 = 36789^2 + 21159^2 .

It is not an unprimeable number, because it can be changed into a prime (1801133801) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3848343 + ... + 3848810.

Almost surely, 2^1801133802 is an apocalyptic number.

1801133802 is an abundant number, since it is smaller than the sum of its proper divisors (2401512282).

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

1801133802 is a wasteful number, since it uses less digits than its factorization.

1801133802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7697174 (or 7697171 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1801133802 is about 42439.7667524222. The cubic root of 1801133802 is about 1216.6957533881.

Adding to 1801133802 its reverse (2083311081), we get a palindrome (3884444883).

The spelling of 1801133802 in words is "one billion, eight hundred one million, one hundred thirty-three thousand, eight hundred two".