2126154647 has 2 divisors, whose sum is σ = 2126154648. Its totient is φ = 2126154646.

The previous prime is 2126154629. The next prime is 2126154677. The reversal of 2126154647 is 7464516212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2126154647 - 2¹⁴ = 2126138263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2126154647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2126154677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063077323 + 1063077324.

It is an arithmetic number, because the mean of its divisors is an integer number (1063077324).

Almost surely, 2^2126154647 is an apocalyptic number.

2126154647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126154647 is an equidigital number, since it uses as much as digits as its factorization.

2126154647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The square root of 2126154647 is about 46110.2444907853. The cubic root of 2126154647 is about 1285.8736098391.

The spelling of 2126154647 in words is "two billion, one hundred twenty-six million, one hundred fifty-four thousand, six hundred forty-seven".