1293375947 has 2 divisors, whose sum is σ = 1293375948. Its totient is φ = 1293375946.

The previous prime is 1293375943. The next prime is 1293375949. The reversal of 1293375947 is 7495733921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1293375947 - 2² = 1293375943 is a prime.

Together with 1293375949, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1293375895 and 1293375904.

It is not a weakly prime, because it can be changed into another prime (1293375943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646687973 + 646687974.

It is an arithmetic number, because the mean of its divisors is an integer number (646687974).

Almost surely, 2^1293375947 is an apocalyptic number.

1293375947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293375947 is an equidigital number, since it uses as much as digits as its factorization.

1293375947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 50.

The square root of 1293375947 is about 35963.5363528116. The cubic root of 1293375947 is about 1089.5360219815.

The spelling of 1293375947 in words is "one billion, two hundred ninety-three million, three hundred seventy-five thousand, nine hundred forty-seven".