2001890016 has 72 divisors (see below), whose sum is σ = 6506149104. Its totient is φ = 571968000.

The previous prime is 2001890003. The next prime is 2001890021. The reversal of 2001890016 is 6100981002.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 494485 + ... + 498516.

It is an arithmetic number, because the mean of its divisors is an integer number (90363182).

Almost surely, 2^2001890016 is an apocalyptic number.

It is an amenable number.

2001890016 is an abundant number, since it is smaller than the sum of its proper divisors (4504259088).

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

2001890016 is a wasteful number, since it uses less digits than its factorization.

2001890016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993024 (or 993013 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2001890016 is about 44742.4855813800. The cubic root of 2001890016 is about 1260.3178034332.

The spelling of 2001890016 in words is "two billion, one million, eight hundred ninety thousand, sixteen".