1274451889 has 2 divisors, whose sum is σ = 1274451890. Its totient is φ = 1274451888.

The previous prime is 1274451883. The next prime is 1274451967. The reversal of 1274451889 is 9881544721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1022912289 + 251539600 = 31983^2 + 15860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1274451889 - 2²¹ = 1272354737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1274451883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637225944 + 637225945.

It is an arithmetic number, because the mean of its divisors is an integer number (637225945).

Almost surely, 2^1274451889 is an apocalyptic number.

It is an amenable number.

1274451889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1274451889 is an equidigital number, since it uses as much as digits as its factorization.

1274451889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 49.

The square root of 1274451889 is about 35699.4662285026. The cubic root of 1274451889 is about 1084.1960360521.

The spelling of 1274451889 in words is "one billion, two hundred seventy-four million, four hundred fifty-one thousand, eight hundred eighty-nine".