118178641 has 9 divisors (see below), whose sum is σ = 137561691. Its totient is φ = 101230752.

The previous prime is 118178617. The next prime is 118178647. The reversal of 118178641 is 146871811.

The square root of 118178641 is 10871.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12006225 + 106172416 = 3465^2 + 10304^2 .

It is not a de Polignac number, because 118178641 - 2⁷ = 118178513 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 118178641.

It is not an unprimeable number, because it can be changed into a prime (118178647) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 75321 + ... + 76873.

Almost surely, 2^118178641 is an apocalyptic number.

118178641 is the 10871-st square number.

118178641 is the 5436-th centered octagonal number.

It is an amenable number.

118178641 is a deficient number, since it is larger than the sum of its proper divisors (19383050).

118178641 is an frugal number, since it uses more digits than its factorization.

118178641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120 (or 1560 counting only the distinct ones).

The product of its digits is 10752, while the sum is 37.

The cubic root of 118178641 is about 490.7342054553.

The spelling of 118178641 in words is "one hundred eighteen million, one hundred seventy-eight thousand, six hundred forty-one".