1801219032 has 56 divisors (see below), whose sum is σ = 5063628540. Its totient is φ = 600404400.

The previous prime is 1801219027. The next prime is 1801219109. The reversal of 1801219032 is 2309121081.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1801218987 and 1801219005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 148594 + ... + 160257.

Almost surely, 2^1801219032 is an apocalyptic number.

1801219032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1801219032 is an abundant number, since it is smaller than the sum of its proper divisors (3262409508).

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

1801219032 is an equidigital number, since it uses as much as digits as its factorization.

1801219032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308875 (or 308856 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1801219032 is about 42440.7708695306. The cubic root of 1801219032 is about 1216.7149445116.

The spelling of 1801219032 in words is "one billion, eight hundred one million, two hundred nineteen thousand, thirty-two".