1126603381 has 2 divisors, whose sum is σ = 1126603382. Its totient is φ = 1126603380.

The previous prime is 1126603349. The next prime is 1126603421. The reversal of 1126603381 is 1833066211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1126206481 + 396900 = 33559^2 + 630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1126603381 - 2⁵ = 1126603349 is a prime.

It is a super-2 number, since 2×1126603381² = 2538470356161262322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1126603981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563301690 + 563301691.

It is an arithmetic number, because the mean of its divisors is an integer number (563301691).

Almost surely, 2^1126603381 is an apocalyptic number.

It is an amenable number.

1126603381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126603381 is an equidigital number, since it uses as much as digits as its factorization.

1126603381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1126603381 is about 33564.9129449191. The cubic root of 1126603381 is about 1040.5357757743.

Adding to 1126603381 its reverse (1833066211), we get a palindrome (2959669592).

The spelling of 1126603381 in words is "one billion, one hundred twenty-six million, six hundred three thousand, three hundred eighty-one".