118640481 has 8 divisors (see below), whose sum is σ = 158314464. Its totient is φ = 79030080.

The previous prime is 118640477. The next prime is 118640491. The reversal of 118640481 is 184046811.

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

It is not a de Polignac number, because 118640481 - 2² = 118640477 is a prime.

It is a super-2 number, since 2×118640481² = 28151127463822722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118640411) 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 7 ways as a sum of consecutive naturals, for example, 11355 + ... + 19136.

It is an arithmetic number, because the mean of its divisors is an integer number (19789308).

Almost surely, 2^118640481 is an apocalyptic number.

It is an amenable number.

118640481 is a deficient number, since it is larger than the sum of its proper divisors (39673983).

118640481 is a wasteful number, since it uses less digits than its factorization.

118640481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31791.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 118640481 is about 10892.2211233522. The cubic root of 118640481 is about 491.3726346643.

The spelling of 118640481 in words is "one hundred eighteen million, six hundred forty thousand, four hundred eighty-one".