1151171789 has 2 divisors, whose sum is σ = 1151171790. Its totient is φ = 1151171788.

The previous prime is 1151171773. The next prime is 1151171803. The reversal of 1151171789 is 9871711511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1149888100 + 1283689 = 33910^2 + 1133^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151171789 - 2⁴ = 1151171773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1151171389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575585894 + 575585895.

It is an arithmetic number, because the mean of its divisors is an integer number (575585895).

Almost surely, 2^1151171789 is an apocalyptic number.

It is an amenable number.

1151171789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151171789 is an equidigital number, since it uses as much as digits as its factorization.

1151171789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 41.

The square root of 1151171789 is about 33928.9226029946. The cubic root of 1151171789 is about 1048.0452790709.

The spelling of 1151171789 in words is "one billion, one hundred fifty-one million, one hundred seventy-one thousand, seven hundred eighty-nine".