1274253161 has 2 divisors, whose sum is σ = 1274253162. Its totient is φ = 1274253160.

The previous prime is 1274253137. The next prime is 1274253181. The reversal of 1274253161 is 1613524721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1272705625 + 1547536 = 35675^2 + 1244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1274253161 is a prime.

It is a super-2 number, since 2×1274253161² = 3247442236636983842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1274253121) 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, 637126580 + 637126581.

It is an arithmetic number, because the mean of its divisors is an integer number (637126581).

Almost surely, 2^1274253161 is an apocalyptic number.

It is an amenable number.

1274253161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1274253161 is an equidigital number, since it uses as much as digits as its factorization.

1274253161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 1274253161 is about 35696.6827730533. The cubic root of 1274253161 is about 1084.1396794563.

Adding to 1274253161 its reverse (1613524721), we get a palindrome (2887777882).

The spelling of 1274253161 in words is "one billion, two hundred seventy-four million, two hundred fifty-three thousand, one hundred sixty-one".