1801642524 has 96 divisors (see below), whose sum is σ = 4874639616. Its totient is φ = 511841280.

The previous prime is 1801642511. The next prime is 1801642559. The reversal of 1801642524 is 4252461081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 633634 + ... + 636470.

It is an arithmetic number, because the mean of its divisors is an integer number (50777496).

Almost surely, 2^1801642524 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 1801642524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2437319808).

1801642524 is an abundant number, since it is smaller than the sum of its proper divisors (3072997092).

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

1801642524 is a wasteful number, since it uses less digits than its factorization.

1801642524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155 (or 3153 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 1801642524 is about 42445.7597882286. The cubic root of 1801642524 is about 1216.8102926544.

The spelling of 1801642524 in words is "one billion, eight hundred one million, six hundred forty-two thousand, five hundred twenty-four".