1274221393 has 2 divisors, whose sum is σ = 1274221394. Its totient is φ = 1274221392.

The previous prime is 1274221387. The next prime is 1274221423. The reversal of 1274221393 is 3931224721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 798458049 + 475763344 = 28257^2 + 21812^2 .

It is a cyclic number.

It is not a de Polignac number, because 1274221393 - 2⁹ = 1274220881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1274221363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637110696 + 637110697.

It is an arithmetic number, because the mean of its divisors is an integer number (637110697).

Almost surely, 2^1274221393 is an apocalyptic number.

It is an amenable number.

1274221393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1274221393 is an equidigital number, since it uses as much as digits as its factorization.

1274221393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 1274221393 is about 35696.2377989614. The cubic root of 1274221393 is about 1084.1306699343.

The spelling of 1274221393 in words is "one billion, two hundred seventy-four million, two hundred twenty-one thousand, three hundred ninety-three".