2001359691 has 16 divisors (see below), whose sum is σ = 3037295520. Its totient is φ = 1301696640.

The previous prime is 2001359683. The next prime is 2001359713. The reversal of 2001359691 is 1969531002.

It is not a de Polignac number, because 2001359691 - 2³ = 2001359683 is a prime.

It is a super-2 number, since 2×2001359691² = 8010881225519230962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2001359671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902850 + ... + 905063.

It is an arithmetic number, because the mean of its divisors is an integer number (189830970).

Almost surely, 2^2001359691 is an apocalyptic number.

2001359691 is a deficient number, since it is larger than the sum of its proper divisors (1035935829).

2001359691 is a wasteful number, since it uses less digits than its factorization.

2001359691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807963 (or 1807957 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 2001359691 is about 44736.5587746756. The cubic root of 2001359691 is about 1260.2065024355.

The spelling of 2001359691 in words is "two billion, one million, three hundred fifty-nine thousand, six hundred ninety-one".