2646201293 has 2 divisors, whose sum is σ = 2646201294. Its totient is φ = 2646201292.

The previous prime is 2646201281. The next prime is 2646201329. The reversal of 2646201293 is 3921026462.

Together with next prime (2646201329) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2465916964 + 180284329 = 49658^2 + 13427^2 .

It is a cyclic number.

It is not a de Polignac number, because 2646201293 - 2⁴ = 2646201277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2646201203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323100646 + 1323100647.

It is an arithmetic number, because the mean of its divisors is an integer number (1323100647).

Almost surely, 2^2646201293 is an apocalyptic number.

2646201293 is the 27497-th centered heptagonal number.

It is an amenable number.

2646201293 is a deficient number, since it is larger than the sum of its proper divisors (1).

2646201293 is an equidigital number, since it uses as much as digits as its factorization.

2646201293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 2646201293 is about 51441.2411689298. The cubic root of 2646201293 is about 1383.1659603696.

The spelling of 2646201293 in words is "two billion, six hundred forty-six million, two hundred one thousand, two hundred ninety-three".