118109647 has 2 divisors, whose sum is σ = 118109648. Its totient is φ = 118109646.

The previous prime is 118109573. The next prime is 118109657. The reversal of 118109647 is 746901811.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118109647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118109657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59054823 + 59054824.

It is an arithmetic number, because the mean of its divisors is an integer number (59054824).

Almost surely, 2^118109647 is an apocalyptic number.

118109647 is a deficient number, since it is larger than the sum of its proper divisors (1).

118109647 is an equidigital number, since it uses as much as digits as its factorization.

118109647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 118109647 is about 10867.8262315884. The cubic root of 118109647 is about 490.6386881761.

The spelling of 118109647 in words is "one hundred eighteen million, one hundred nine thousand, six hundred forty-seven".