1133981869 has 2 divisors, whose sum is σ = 1133981870. Its totient is φ = 1133981868.

The previous prime is 1133981861. The next prime is 1133981873. The reversal of 1133981869 is 9681893311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1084911844 + 49070025 = 32938^2 + 7005^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133981869 - 2³ = 1133981861 is a prime.

It is a super-2 number, since 2×1133981869² = 2571829758441466322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1133981861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566990934 + 566990935.

It is an arithmetic number, because the mean of its divisors is an integer number (566990935).

Almost surely, 2^1133981869 is an apocalyptic number.

It is an amenable number.

1133981869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133981869 is an equidigital number, since it uses as much as digits as its factorization.

1133981869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 49.

The square root of 1133981869 is about 33674.6472735796. The cubic root of 1133981869 is about 1042.8024357785.

The spelling of 1133981869 in words is "one billion, one hundred thirty-three million, nine hundred eighty-one thousand, eight hundred sixty-nine".