111668951 has 2 divisors, whose sum is σ = 111668952. Its totient is φ = 111668950.

The previous prime is 111668929. The next prime is 111668969. The reversal of 111668951 is 159866111.

It is a strong prime.

It is an emirp because it is prime and its reverse (159866111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111668951 - 2¹⁸ = 111406807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111668911) 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, 55834475 + 55834476.

It is an arithmetic number, because the mean of its divisors is an integer number (55834476).

Almost surely, 2^111668951 is an apocalyptic number.

111668951 is a deficient number, since it is larger than the sum of its proper divisors (1).

111668951 is an equidigital number, since it uses as much as digits as its factorization.

111668951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 38.

The square root of 111668951 is about 10567.3530744458. The cubic root of 111668951 is about 481.5530584313.

The spelling of 111668951 in words is "one hundred eleven million, six hundred sixty-eight thousand, nine hundred fifty-one".