2001745863 has 24 divisors (see below), whose sum is σ = 3125714592. Its totient is φ = 1227140928.

The previous prime is 2001745861. The next prime is 2001745873. The reversal of 2001745863 is 3685471002.

2001745863 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 74 + 586 + 3 = 666.

It is not a de Polignac number, because 2001745863 - 2¹ = 2001745861 is a prime.

It is a super-2 number, since 2×2001745863² = 8013973000075229538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001745861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1756 + ... + 63297.

It is an arithmetic number, because the mean of its divisors is an integer number (130238108).

Almost surely, 2^2001745863 is an apocalyptic number.

2001745863 is a deficient number, since it is larger than the sum of its proper divisors (1123968729).

2001745863 is a wasteful number, since it uses less digits than its factorization.

2001745863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65335 (or 65332 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 2001745863 is about 44740.8746338290. The cubic root of 2001745863 is about 1260.2875515293.

The spelling of 2001745863 in words is "two billion, one million, seven hundred forty-five thousand, eight hundred sixty-three".