1281373367 has 2 divisors, whose sum is σ = 1281373368. Its totient is φ = 1281373366.

The previous prime is 1281373333. The next prime is 1281373463. The reversal of 1281373367 is 7633731821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1281373367 - 2¹⁶ = 1281307831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1281373967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640686683 + 640686684.

It is an arithmetic number, because the mean of its divisors is an integer number (640686684).

Almost surely, 2^1281373367 is an apocalyptic number.

1281373367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1281373367 is an equidigital number, since it uses as much as digits as its factorization.

1281373367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 41.

The square root of 1281373367 is about 35796.2758817171. The cubic root of 1281373367 is about 1086.1552298777.

The spelling of 1281373367 in words is "one billion, two hundred eighty-one million, three hundred seventy-three thousand, three hundred sixty-seven".