2001798552 has 128 divisors (see below), whose sum is σ = 5814970560. Its totient is φ = 568688640.

The previous prime is 2001798541. The next prime is 2001798559. The reversal of 2001798552 is 2558971002.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 2001798552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001798559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277552 + ... + 284672.

Almost surely, 2^2001798552 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 2001798552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2907485280).

2001798552 is an abundant number, since it is smaller than the sum of its proper divisors (3813172008).

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

2001798552 is a wasteful number, since it uses less digits than its factorization.

2001798552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7213 (or 7209 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 2001798552 is about 44741.4634539372. The cubic root of 2001798552 is about 1260.2986089949.

The spelling of 2001798552 in words is "two billion, one million, seven hundred ninety-eight thousand, five hundred fifty-two".