118125491 has 4 divisors (see below), whose sum is σ = 128864184. Its totient is φ = 107386800.

The previous prime is 118125481. The next prime is 118125521. The reversal of 118125491 is 194521811.

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

It is a cyclic number.

It is not a de Polignac number, because 118125491 - 2¹⁰ = 118124467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118125421) 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, 5369330 + ... + 5369351.

It is an arithmetic number, because the mean of its divisors is an integer number (32216046).

Almost surely, 2^118125491 is an apocalyptic number.

118125491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

118125491 is a deficient number, since it is larger than the sum of its proper divisors (10738693).

118125491 is a wasteful number, since it uses less digits than its factorization.

118125491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10738692.

The product of its digits is 2880, while the sum is 32.

The square root of 118125491 is about 10868.5551477646. Note that the first 3 decimals coincide. The cubic root of 118125491 is about 490.6606263553.

The spelling of 118125491 in words is "one hundred eighteen million, one hundred twenty-five thousand, four hundred ninety-one".