118123649 has 8 divisors (see below), whose sum is σ = 135166080. Its totient is φ = 101123136.

The previous prime is 118123631. The next prime is 118123651. The reversal of 118123649 is 946321811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118123649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118123619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4184 + ... + 15929.

It is an arithmetic number, because the mean of its divisors is an integer number (16895760).

Almost surely, 2^118123649 is an apocalyptic number.

It is an amenable number.

118123649 is a deficient number, since it is larger than the sum of its proper divisors (17042431).

118123649 is an equidigital number, since it uses as much as digits as its factorization.

118123649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20959.

The product of its digits is 10368, while the sum is 35.

The square root of 118123649 is about 10868.4704075597. The cubic root of 118123649 is about 490.6580759558.

The spelling of 118123649 in words is "one hundred eighteen million, one hundred twenty-three thousand, six hundred forty-nine".