2081711641 has 4 divisors (see below), whose sum is σ = 2112782032. Its totient is φ = 2050641252.

The previous prime is 2081711633. The next prime is 2081711719. The reversal of 2081711641 is 1461171802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2081711641 - 2³ = 2081711633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2081715641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15535095 + ... + 15535228.

It is an arithmetic number, because the mean of its divisors is an integer number (528195508).

Almost surely, 2^2081711641 is an apocalyptic number.

It is an amenable number.

2081711641 is a deficient number, since it is larger than the sum of its proper divisors (31070391).

2081711641 is an equidigital number, since it uses as much as digits as its factorization.

2081711641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31070390.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 2081711641 is about 45625.7782508967. The cubic root of 2081711641 is about 1276.8509097972.

The spelling of 2081711641 in words is "two billion, eighty-one million, seven hundred eleven thousand, six hundred forty-one".