861011119 has 2 divisors, whose sum is σ = 861011120. Its totient is φ = 861011118.

The previous prime is 861011077. The next prime is 861011147. The reversal of 861011119 is 911110168.

It is an a-pointer prime, because the next prime (861011147) can be obtained adding 861011119 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861011119 - 2¹⁵ = 860978351 is a prime.

It is a super-2 number, since 2×861011119² = 1482680294083264322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861011149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430505559 + 430505560.

It is an arithmetic number, because the mean of its divisors is an integer number (430505560).

Almost surely, 2^861011119 is an apocalyptic number.

861011119 is a deficient number, since it is larger than the sum of its proper divisors (1).

861011119 is an equidigital number, since it uses as much as digits as its factorization.

861011119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 28.

The square root of 861011119 is about 29342.9909688839. The cubic root of 861011119 is about 951.3410861786.

The spelling of 861011119 in words is "eight hundred sixty-one million, eleven thousand, one hundred nineteen".