1293141977 has 2 divisors, whose sum is σ = 1293141978. Its totient is φ = 1293141976.

The previous prime is 1293141959. The next prime is 1293141979. The reversal of 1293141977 is 7791413921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1249198336 + 43943641 = 35344^2 + 6629^2 .

It is a cyclic number.

It is not a de Polignac number, because 1293141977 - 2⁸ = 1293141721 is a prime.

Together with 1293141979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1293141979) 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, 646570988 + 646570989.

It is an arithmetic number, because the mean of its divisors is an integer number (646570989).

Almost surely, 2^1293141977 is an apocalyptic number.

It is an amenable number.

1293141977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293141977 is an equidigital number, since it uses as much as digits as its factorization.

1293141977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 44.

The square root of 1293141977 is about 35960.2833275824. The cubic root of 1293141977 is about 1089.4703194772.

The spelling of 1293141977 in words is "one billion, two hundred ninety-three million, one hundred forty-one thousand, nine hundred seventy-seven".