2005626891 has 8 divisors (see below), whose sum is σ = 2674497744. Its totient is φ = 1336920320.

The previous prime is 2005626853. The next prime is 2005626907. The reversal of 2005626891 is 1986265002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2005626891 - 2²⁶ = 1938518027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2005626811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9006 + ... + 63971.

It is an arithmetic number, because the mean of its divisors is an integer number (334312218).

Almost surely, 2^2005626891 is an apocalyptic number.

2005626891 is a deficient number, since it is larger than the sum of its proper divisors (668870853).

2005626891 is an equidigital number, since it uses as much as digits as its factorization.

2005626891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82141.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 2005626891 is about 44784.2259171686. The cubic root of 2005626891 is about 1261.1015165959.

The spelling of 2005626891 in words is "two billion, five million, six hundred twenty-six thousand, eight hundred ninety-one".