118438647 has 16 divisors (see below), whose sum is σ = 168716160. Its totient is φ = 73684512.

The previous prime is 118438633. The next prime is 118438651. The reversal of 118438647 is 746834811.

It is not a de Polignac number, because 118438647 - 2⁶ = 118438583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 118438599 and 118438608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118438657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11688 + ... + 19325.

It is an arithmetic number, because the mean of its divisors is an integer number (10544760).

Almost surely, 2^118438647 is an apocalyptic number.

118438647 is a deficient number, since it is larger than the sum of its proper divisors (50277513).

118438647 is a wasteful number, since it uses less digits than its factorization.

118438647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31102.

The product of its digits is 129024, while the sum is 42.

The square root of 118438647 is about 10882.9521270655. The cubic root of 118438647 is about 491.0938315758.

The spelling of 118438647 in words is "one hundred eighteen million, four hundred thirty-eight thousand, six hundred forty-seven".