1812401032 has 64 divisors (see below), whose sum is σ = 3864168000. Its totient is φ = 790020864.

The previous prime is 1812401029. The next prime is 1812401033. The reversal of 1812401032 is 2301042181.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1812400994 and 1812401012.

It is not an unprimeable number, because it can be changed into a prime (1812401033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735819 + ... + 738277.

It is an arithmetic number, because the mean of its divisors is an integer number (60377625).

Almost surely, 2^1812401032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812401032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1932084000).

1812401032 is an abundant number, since it is smaller than the sum of its proper divisors (2051766968).

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

1812401032 is a wasteful number, since it uses less digits than its factorization.

1812401032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870 (or 2866 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1812401032 is about 42572.3035787353. The cubic root of 1812401032 is about 1219.2275482859.

The spelling of 1812401032 in words is "one billion, eight hundred twelve million, four hundred one thousand, thirty-two".