2508138907 has 2 divisors, whose sum is σ = 2508138908. Its totient is φ = 2508138906.

The previous prime is 2508138851. The next prime is 2508138923. The reversal of 2508138907 is 7098318052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2508138907 - 2¹¹ = 2508136859 is a prime.

It is a super-3 number, since 3×2508138907³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2508138977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254069453 + 1254069454.

It is an arithmetic number, because the mean of its divisors is an integer number (1254069454).

Almost surely, 2^2508138907 is an apocalyptic number.

2508138907 is a deficient number, since it is larger than the sum of its proper divisors (1).

2508138907 is an equidigital number, since it uses as much as digits as its factorization.

2508138907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 2508138907 is about 50081.3229358011. The cubic root of 2508138907 is about 1358.6800390586.

The spelling of 2508138907 in words is "two billion, five hundred eight million, one hundred thirty-eight thousand, nine hundred seven".