2026123549 has 2 divisors, whose sum is σ = 2026123550. Its totient is φ = 2026123548.

The previous prime is 2026123531. The next prime is 2026123571. The reversal of 2026123549 is 9453216202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1270423449 + 755700100 = 35643^2 + 27490^2 .

It is a cyclic number.

It is not a de Polignac number, because 2026123549 - 2⁹ = 2026123037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2026123049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013061774 + 1013061775.

It is an arithmetic number, because the mean of its divisors is an integer number (1013061775).

Almost surely, 2^2026123549 is an apocalyptic number.

It is an amenable number.

2026123549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2026123549 is an equidigital number, since it uses as much as digits as its factorization.

2026123549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2026123549 is about 45012.4821466224. The cubic root of 2026123549 is about 1265.3829393648.

The spelling of 2026123549 in words is "two billion, twenty-six million, one hundred twenty-three thousand, five hundred forty-nine".