1813375432 has 64 divisors (see below), whose sum is σ = 3802256640. Its totient is φ = 803712000.

The previous prime is 1813375393. The next prime is 1813375433. The reversal of 1813375432 is 2345733181.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1813375391 and 1813375400.

It is not an unprimeable number, because it can be changed into a prime (1813375433) 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, 1393182 + ... + 1394482.

It is an arithmetic number, because the mean of its divisors is an integer number (59410260).

Almost surely, 2^1813375432 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 1813375432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1901128320).

1813375432 is an abundant number, since it is smaller than the sum of its proper divisors (1988881208).

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

1813375432 is a wasteful number, since it uses less digits than its factorization.

1813375432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702 (or 1698 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 1813375432 is about 42583.7461010654. The cubic root of 1813375432 is about 1219.4460066479.

The spelling of 1813375432 in words is "one billion, eight hundred thirteen million, three hundred seventy-five thousand, four hundred thirty-two".