2664026489 has 2 divisors, whose sum is σ = 2664026490. Its totient is φ = 2664026488.

The previous prime is 2664026479. The next prime is 2664026501. The reversal of 2664026489 is 9846204662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2662044025 + 1982464 = 51595^2 + 1408^2 .

It is a cyclic number.

It is not a de Polignac number, because 2664026489 - 2¹² = 2664022393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2664026459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332013244 + 1332013245.

It is an arithmetic number, because the mean of its divisors is an integer number (1332013245).

Almost surely, 2^2664026489 is an apocalyptic number.

It is an amenable number.

2664026489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664026489 is an equidigital number, since it uses as much as digits as its factorization.

2664026489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 47.

The square root of 2664026489 is about 51614.2082085931. The cubic root of 2664026489 is about 1386.2647483459.

The spelling of 2664026489 in words is "two billion, six hundred sixty-four million, twenty-six thousand, four hundred eighty-nine".