118450638 has 36 divisors (see below), whose sum is σ = 262824120. Its totient is φ = 38554488.

The previous prime is 118450613. The next prime is 118450639. The reversal of 118450638 is 836054811.

118450638 is a `hidden beast` number, since 1 + 18 + 4 + 5 + 0 + 638 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118450639) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31503 + ... + 35061.

It is an arithmetic number, because the mean of its divisors is an integer number (7300670).

Almost surely, 2^118450638 is an apocalyptic number.

118450638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

118450638 is an abundant number, since it is smaller than the sum of its proper divisors (144373482).

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

118450638 is a wasteful number, since it uses less digits than its factorization.

118450638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3653 (or 3607 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 118450638 is about 10883.5030206271. The cubic root of 118450638 is about 491.1104041714.

It can be divided in two parts, 11 and 8450638, that added together give a square (8450649 = 2907²).

The spelling of 118450638 in words is "one hundred eighteen million, four hundred fifty thousand, six hundred thirty-eight".