2001333616 has 20 divisors (see below), whose sum is σ = 4011294600. Its totient is φ = 966160832.

The previous prime is 2001333613. The next prime is 2001333629. The reversal of 2001333616 is 6163331002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001333611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2156146 + ... + 2157073.

It is an arithmetic number, because the mean of its divisors is an integer number (200564730).

Almost surely, 2^2001333616 is an apocalyptic number.

It is an amenable number.

2001333616 is an abundant number, since it is smaller than the sum of its proper divisors (2009960984).

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

2001333616 is a wasteful number, since it uses less digits than its factorization.

2001333616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313256 (or 4313250 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 2001333616 is about 44736.2673454100. The cubic root of 2001333616 is about 1260.2010294850.

Adding to 2001333616 its reverse (6163331002), we get a palindrome (8164664618).

The spelling of 2001333616 in words is "two billion, one million, three hundred thirty-three thousand, six hundred sixteen".