1293126973 has 2 divisors, whose sum is σ = 1293126974. Its totient is φ = 1293126972.

The previous prime is 1293126943. The next prime is 1293126979. The reversal of 1293126973 is 3796213921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1265438329 + 27688644 = 35573^2 + 5262^2 .

It is a cyclic number.

It is not a de Polignac number, because 1293126973 - 2¹⁷ = 1292995901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1293126979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646563486 + 646563487.

It is an arithmetic number, because the mean of its divisors is an integer number (646563487).

Almost surely, 2^1293126973 is an apocalyptic number.

It is an amenable number.

1293126973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293126973 is an equidigital number, since it uses as much as digits as its factorization.

1293126973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 43.

The square root of 1293126973 is about 35960.0747079313. The cubic root of 1293126973 is about 1089.4661058445.

The spelling of 1293126973 in words is "one billion, two hundred ninety-three million, one hundred twenty-six thousand, nine hundred seventy-three".