2001965564 has 12 divisors (see below), whose sum is σ = 3577981344. Its totient is φ = 979685184.

The previous prime is 2001965557. The next prime is 2001965573. The reversal of 2001965564 is 4655691002.

It is a super-2 number, since 2×2001965564² = 8015732238883676192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5324189 + ... + 5324564.

It is an arithmetic number, because the mean of its divisors is an integer number (298165112).

Almost surely, 2^2001965564 is an apocalyptic number.

It is an amenable number.

2001965564 is a deficient number, since it is larger than the sum of its proper divisors (1576015780).

2001965564 is a wasteful number, since it uses less digits than its factorization.

2001965564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10648804 (or 10648802 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 2001965564 is about 44743.3298269139. The cubic root of 2001965564 is about 1260.3336573331. Note that the first 3 decimals are identical.

The spelling of 2001965564 in words is "two billion, one million, nine hundred sixty-five thousand, five hundred sixty-four".