1161939011 has 2 divisors, whose sum is σ = 1161939012. Its totient is φ = 1161939010.

The previous prime is 1161938971. The next prime is 1161939013. The reversal of 1161939011 is 1109391611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1161939011 - 2¹⁴ = 1161922627 is a prime.

Together with 1161939013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1161939013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580969505 + 580969506.

It is an arithmetic number, because the mean of its divisors is an integer number (580969506).

Almost surely, 2^1161939011 is an apocalyptic number.

1161939011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161939011 is an equidigital number, since it uses as much as digits as its factorization.

1161939011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 1161939011 is about 34087.2265078871. The cubic root of 1161939011 is about 1051.3026948437.

The spelling of 1161939011 in words is "one billion, one hundred sixty-one million, nine hundred thirty-nine thousand, eleven".