1108789867 has 2 divisors, whose sum is σ = 1108789868. Its totient is φ = 1108789866.

The previous prime is 1108789837. The next prime is 1108789879. The reversal of 1108789867 is 7689878011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1108789867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1108789807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554394933 + 554394934.

It is an arithmetic number, because the mean of its divisors is an integer number (554394934).

Almost surely, 2^1108789867 is an apocalyptic number.

1108789867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1108789867 is an equidigital number, since it uses as much as digits as its factorization.

1108789867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 55.

The square root of 1108789867 is about 33298.4964675584. The cubic root of 1108789867 is about 1035.0224012826.

The spelling of 1108789867 in words is "one billion, one hundred eight million, seven hundred eighty-nine thousand, eight hundred sixty-seven".