118993971 has 4 divisors (see below), whose sum is σ = 158658632. Its totient is φ = 79329312.

The previous prime is 118993969. The next prime is 118993997. The reversal of 118993971 is 179399811.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 118993971 - 2¹ = 118993969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118993971.

It is not an unprimeable number, because it can be changed into a prime (118993921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19832326 + ... + 19832331.

It is an arithmetic number, because the mean of its divisors is an integer number (39664658).

Almost surely, 2^118993971 is an apocalyptic number.

118993971 is a deficient number, since it is larger than the sum of its proper divisors (39664661).

118993971 is an equidigital number, since it uses as much as digits as its factorization.

118993971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39664660.

The product of its digits is 122472, while the sum is 48.

The square root of 118993971 is about 10908.4357723736. The cubic root of 118993971 is about 491.8601666529.

The spelling of 118993971 in words is "one hundred eighteen million, nine hundred ninety-three thousand, nine hundred seventy-one".