2126020591 has 2 divisors, whose sum is σ = 2126020592. Its totient is φ = 2126020590.

The previous prime is 2126020583. The next prime is 2126020619. The reversal of 2126020591 is 1950206212.

It is an a-pointer prime, because the next prime (2126020619) can be obtained adding 2126020591 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2126020591 - 2³ = 2126020583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2126020291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063010295 + 1063010296.

It is an arithmetic number, because the mean of its divisors is an integer number (1063010296).

Almost surely, 2^2126020591 is an apocalyptic number.

2126020591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126020591 is an equidigital number, since it uses as much as digits as its factorization.

2126020591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2126020591 is about 46108.7908212740. The cubic root of 2126020591 is about 1285.8465841011.

The spelling of 2126020591 in words is "two billion, one hundred twenty-six million, twenty thousand, five hundred ninety-one".