1801121348 has 24 divisors (see below), whose sum is σ = 3403185240. Its totient is φ = 829140480.

The previous prime is 1801121347. The next prime is 1801121353. The reversal of 1801121348 is 8431211081.

It can be written as a sum of positive squares in 4 ways, for example, as 124055044 + 1677066304 = 11138^2 + 40952^2 .

It is a super-2 number, since 2×1801121348² = 6488076220442674208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1801121348.

It is not an unprimeable number, because it can be changed into a prime (1801121347) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24293 + ... + 64748.

It is an arithmetic number, because the mean of its divisors is an integer number (141799385).

Almost surely, 2^1801121348 is an apocalyptic number.

It is an amenable number.

1801121348 is a deficient number, since it is larger than the sum of its proper divisors (1602063892).

1801121348 is a wasteful number, since it uses less digits than its factorization.

1801121348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89447 (or 89445 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 1801121348 is about 42439.6200265742. The cubic root of 1801121348 is about 1216.6929490872.

The spelling of 1801121348 in words is "one billion, eight hundred one million, one hundred twenty-one thousand, three hundred forty-eight".