118971971 has 2 divisors, whose sum is σ = 118971972. Its totient is φ = 118971970.

The previous prime is 118971929. The next prime is 118971989. The reversal of 118971971 is 179179811.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118971971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118971271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59485985 + 59485986.

It is an arithmetic number, because the mean of its divisors is an integer number (59485986).

Almost surely, 2^118971971 is an apocalyptic number.

118971971 is a deficient number, since it is larger than the sum of its proper divisors (1).

118971971 is an equidigital number, since it uses as much as digits as its factorization.

118971971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 44.

The square root of 118971971 is about 10907.4273318689. The cubic root of 118971971 is about 491.8298525383.

The spelling of 118971971 in words is "one hundred eighteen million, nine hundred seventy-one thousand, nine hundred seventy-one".