1801291420 has 24 divisors (see below), whose sum is σ = 3799684224. Its totient is φ = 717283776.

The previous prime is 1801291411. The next prime is 1801291421. The reversal of 1801291420 is 241921081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801291421) 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, 197479 + ... + 206398.

It is an arithmetic number, because the mean of its divisors is an integer number (158320176).

Almost surely, 2^1801291420 is an apocalyptic number.

1801291420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1801291420 is an abundant number, since it is smaller than the sum of its proper divisors (1998392804).

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

1801291420 is a wasteful number, since it uses less digits than its factorization.

1801291420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404109 (or 404107 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1801291420 is about 42441.6236729935. The cubic root of 1801291420 is about 1216.7312435439.

The spelling of 1801291420 in words is "one billion, eight hundred one million, two hundred ninety-one thousand, four hundred twenty".