1375862281 has 2 divisors, whose sum is σ = 1375862282. Its totient is φ = 1375862280.

The previous prime is 1375862251. The next prime is 1375862291. The reversal of 1375862281 is 1822685731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1259114256 + 116748025 = 35484^2 + 10805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375862281 - 2⁵ = 1375862249 is a prime.

It is a super-2 number, since 2×1375862281² = 3785994032557045922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1375862251) 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, 687931140 + 687931141.

It is an arithmetic number, because the mean of its divisors is an integer number (687931141).

Almost surely, 2^1375862281 is an apocalyptic number.

It is an amenable number.

1375862281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375862281 is an equidigital number, since it uses as much as digits as its factorization.

1375862281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 43.

The square root of 1375862281 is about 37092.6176078206. The cubic root of 1375862281 is about 1112.2224446841. Note that the first 3 decimals are identical.

The spelling of 1375862281 in words is "one billion, three hundred seventy-five million, eight hundred sixty-two thousand, two hundred eighty-one".