118171540 has 12 divisors (see below), whose sum is σ = 248160276. Its totient is φ = 47268608.

The previous prime is 118171531. The next prime is 118171541. The reversal of 118171540 is 45171811.

It can be written as a sum of positive squares in 2 ways, for example, as 35070084 + 83101456 = 5922^2 + 9116^2 .

It is a junction number, because it is equal to n+sod(n) for n = 118171499 and 118171508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118171541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2954269 + ... + 2954308.

It is an arithmetic number, because the mean of its divisors is an integer number (20680023).

Almost surely, 2^118171540 is an apocalyptic number.

118171540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118171540 is an abundant number, since it is smaller than the sum of its proper divisors (129988736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118171540 is a wasteful number, since it uses less digits than its factorization.

118171540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5908586 (or 5908584 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 28.

The square root of 118171540 is about 10870.6733922053. The cubic root of 118171540 is about 490.7243763431.

The spelling of 118171540 in words is "one hundred eighteen million, one hundred seventy-one thousand, five hundred forty".