1800368532 has 72 divisors (see below), whose sum is σ = 4735182816. Its totient is φ = 598127328.

The previous prime is 1800368519. The next prime is 1800368543. The reversal of 1800368532 is 2358630081.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 305203 + ... + 311045.

It is an arithmetic number, because the mean of its divisors is an integer number (65766428).

Almost surely, 2^1800368532 is an apocalyptic number.

1800368532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1800368532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2367591408).

1800368532 is an abundant number, since it is smaller than the sum of its proper divisors (2934814284).

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

1800368532 is a wasteful number, since it uses less digits than its factorization.

1800368532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6179 (or 6165 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1800368532 is about 42430.7498401808. The cubic root of 1800368532 is about 1216.5234114521.

The spelling of 1800368532 in words is "one billion, eight hundred million, three hundred sixty-eight thousand, five hundred thirty-two".