2148668507 has 2 divisors, whose sum is σ = 2148668508. Its totient is φ = 2148668506.

The previous prime is 2148668387. The next prime is 2148668521. The reversal of 2148668507 is 7058668412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2148668507 - 2⁸ = 2148668251 is a prime.

It is not a weakly prime, because it can be changed into another prime (2148661507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074334253 + 1074334254.

It is an arithmetic number, because the mean of its divisors is an integer number (1074334254).

Almost surely, 2^2148668507 is an apocalyptic number.

2148668507 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148668507 is an equidigital number, since it uses as much as digits as its factorization.

2148668507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 2148668507 is about 46353.7323955688. The cubic root of 2148668507 is about 1290.3963902136.

The spelling of 2148668507 in words is "two billion, one hundred forty-eight million, six hundred sixty-eight thousand, five hundred seven".