1293507139 has 2 divisors, whose sum is σ = 1293507140. Its totient is φ = 1293507138.

The previous prime is 1293507133. The next prime is 1293507167. The reversal of 1293507139 is 9317053921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1293507139 - 2⁷ = 1293507011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1293507133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646753569 + 646753570.

It is an arithmetic number, because the mean of its divisors is an integer number (646753570).

Almost surely, 2^1293507139 is an apocalyptic number.

1293507139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293507139 is an equidigital number, since it uses as much as digits as its factorization.

1293507139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 1293507139 is about 35965.3602651218. The cubic root of 1293507139 is about 1089.5728593186.

The spelling of 1293507139 in words is "one billion, two hundred ninety-three million, five hundred seven thousand, one hundred thirty-nine".