1171883081 has 2 divisors, whose sum is σ = 1171883082. Its totient is φ = 1171883080.

The previous prime is 1171883071. The next prime is 1171883087. The reversal of 1171883081 is 1803881711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1151991481 + 19891600 = 33941^2 + 4460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1171883081 - 2¹⁴ = 1171866697 is a prime.

It is a super-2 number, since 2×1171883081² = 2746619911068105122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1171883087) 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, 585941540 + 585941541.

It is an arithmetic number, because the mean of its divisors is an integer number (585941541).

Almost surely, 2^1171883081 is an apocalyptic number.

It is an amenable number.

1171883081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171883081 is an equidigital number, since it uses as much as digits as its factorization.

1171883081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 38.

The square root of 1171883081 is about 34232.7778744291. Note that the first 3 decimals coincide. The cubic root of 1171883081 is about 1054.2932550098.

The spelling of 1171883081 in words is "one billion, one hundred seventy-one million, eight hundred eighty-three thousand, eighty-one".