187111422929 has 2 divisors, whose sum is σ = 187111422930. Its totient is φ = 187111422928.

The previous prime is 187111422893. The next prime is 187111422941. The reversal of 187111422929 is 929224111781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106000382929 + 81111040000 = 325577^2 + 284800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187111422929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (187111442929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93555711464 + 93555711465.

It is an arithmetic number, because the mean of its divisors is an integer number (93555711465).

Almost surely, 2^187111422929 is an apocalyptic number.

It is an amenable number.

187111422929 is a deficient number, since it is larger than the sum of its proper divisors (1).

187111422929 is an equidigital number, since it uses as much as digits as its factorization.

187111422929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 47.

The spelling of 187111422929 in words is "one hundred eighty-seven billion, one hundred eleven million, four hundred twenty-two thousand, nine hundred twenty-nine".