2650211891 has 2 divisors, whose sum is σ = 2650211892. Its totient is φ = 2650211890.

The previous prime is 2650211857. The next prime is 2650211897. The reversal of 2650211891 is 1981120562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2650211891 - 2²⁶ = 2583103027 is a prime.

It is not a weakly prime, because it can be changed into another prime (2650211897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325105945 + 1325105946.

It is an arithmetic number, because the mean of its divisors is an integer number (1325105946).

Almost surely, 2^2650211891 is an apocalyptic number.

2650211891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2650211891 is an equidigital number, since it uses as much as digits as its factorization.

2650211891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 2650211891 is about 51480.2087311231. The cubic root of 2650211891 is about 1383.8643857550.

The spelling of 2650211891 in words is "two billion, six hundred fifty million, two hundred eleven thousand, eight hundred ninety-one".