118571641 has 4 divisors (see below), whose sum is σ = 118907892. Its totient is φ = 118235392.

The previous prime is 118571627. The next prime is 118571657. The reversal of 118571641 is 146175811.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22610025 + 95961616 = 4755^2 + 9796^2 .

It is a cyclic number.

It is not a de Polignac number, because 118571641 - 2²⁵ = 85017209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118571597 and 118571606.

It is not an unprimeable number, because it can be changed into a prime (118571671) 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, 167596 + ... + 168301.

It is an arithmetic number, because the mean of its divisors is an integer number (29726973).

Almost surely, 2^118571641 is an apocalyptic number.

It is an amenable number.

118571641 is a deficient number, since it is larger than the sum of its proper divisors (336251).

118571641 is an equidigital number, since it uses as much as digits as its factorization.

118571641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336250.

The product of its digits is 6720, while the sum is 34.

The square root of 118571641 is about 10889.0606114577. The cubic root of 118571641 is about 491.2775781922.

The spelling of 118571641 in words is "one hundred eighteen million, five hundred seventy-one thousand, six hundred forty-one".