1274451289 has 2 divisors, whose sum is σ = 1274451290. Its totient is φ = 1274451288.

The previous prime is 1274451263. The next prime is 1274451293. The reversal of 1274451289 is 9821544721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1204645264 + 69806025 = 34708^2 + 8355^2 .

It is an emirp because it is prime and its reverse (9821544721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1274451289 - 2¹⁷ = 1274320217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1274451889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637225644 + 637225645.

It is an arithmetic number, because the mean of its divisors is an integer number (637225645).

Almost surely, 2^1274451289 is an apocalyptic number.

It is an amenable number.

1274451289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1274451289 is an equidigital number, since it uses as much as digits as its factorization.

1274451289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 1274451289 is about 35699.4578250147. The cubic root of 1274451289 is about 1084.1958659090.

The spelling of 1274451289 in words is "one billion, two hundred seventy-four million, four hundred fifty-one thousand, two hundred eighty-nine".