2003201634 has 32 divisors (see below), whose sum is σ = 4672195200. Its totient is φ = 572342736.

The previous prime is 2003201623. The next prime is 2003201639. The reversal of 2003201634 is 4361023002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2003201634.

It is not an unprimeable number, because it can be changed into a prime (2003201639) 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, 484629 + ... + 488744.

It is an arithmetic number, because the mean of its divisors is an integer number (146006100).

Almost surely, 2^2003201634 is an apocalyptic number.

2003201634 is an abundant number, since it is smaller than the sum of its proper divisors (2668993566).

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

2003201634 is an equidigital number, since it uses as much as digits as its factorization.

2003201634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973399 (or 973385 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2003201634 is about 44757.1405923122. The cubic root of 2003201634 is about 1260.5929924817.

Adding to 2003201634 its reverse (4361023002), we get a palindrome (6364224636).

The spelling of 2003201634 in words is "two billion, three million, two hundred one thousand, six hundred thirty-four".