1274575863949 has 2 divisors, whose sum is σ = 1274575863950. Its totient is φ = 1274575863948.

The previous prime is 1274575863839. The next prime is 1274575863959. The reversal of 1274575863949 is 9493685754721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 918904374025 + 355671489924 = 958595^2 + 596382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1274575863949 is a prime.

It is a super-2 number, since 2×1274575863949² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1274575863959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637287931974 + 637287931975.

It is an arithmetic number, because the mean of its divisors is an integer number (637287931975).

Almost surely, 2^{1274575863949} is an apocalyptic number.

It is an amenable number.

1274575863949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1274575863949 is an equidigital number, since it uses as much as digits as its factorization.

1274575863949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 457228800, while the sum is 70.

The spelling of 1274575863949 in words is "one trillion, two hundred seventy-four billion, five hundred seventy-five million, eight hundred sixty-three thousand, nine hundred forty-nine".