1294177071949 has 2 divisors, whose sum is σ = 1294177071950. Its totient is φ = 1294177071948.

The previous prime is 1294177071871. The next prime is 1294177071959. The reversal of 1294177071949 is 9491707714921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1216428114724 + 77748957225 = 1102918^2 + 278835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1294177071949 - 2¹⁷ = 1294176940877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1294177071959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647088535974 + 647088535975.

It is an arithmetic number, because the mean of its divisors is an integer number (647088535975).

Almost surely, 2^{1294177071949} is an apocalyptic number.

It is an amenable number.

1294177071949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1294177071949 is an equidigital number, since it uses as much as digits as its factorization.

1294177071949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8001504, while the sum is 61.

The spelling of 1294177071949 in words is "one trillion, two hundred ninety-four billion, one hundred seventy-seven million, seventy-one thousand, nine hundred forty-nine".