1134387281 has 2 divisors, whose sum is σ = 1134387282. Its totient is φ = 1134387280.

The previous prime is 1134387239. The next prime is 1134387337. The reversal of 1134387281 is 1827834311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 694059025 + 440328256 = 26345^2 + 20984^2 .

It is a cyclic number.

It is not a de Polignac number, because 1134387281 - 2²⁶ = 1067278417 is a prime.

It is a super-2 number, since 2×1134387281² = 2573669006589145922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1134387211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567193640 + 567193641.

It is an arithmetic number, because the mean of its divisors is an integer number (567193641).

Almost surely, 2^1134387281 is an apocalyptic number.

It is an amenable number.

1134387281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1134387281 is an equidigital number, since it uses as much as digits as its factorization.

1134387281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 1134387281 is about 33680.6662790391. Note that the first 3 decimals coincide. The cubic root of 1134387281 is about 1042.9266923948.

The spelling of 1134387281 in words is "one billion, one hundred thirty-four million, three hundred eighty-seven thousand, two hundred eighty-one".