118638000434 has 16 divisors (see below), whose sum is σ = 187355525280. Its totient is φ = 56187237600.

The previous prime is 118638000427. The next prime is 118638000451. The reversal of 118638000434 is 434000836811.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44459 + ... + 489134.

It is an arithmetic number, because the mean of its divisors is an integer number (11709720330).

Almost surely, 2^118638000434 is an apocalyptic number.

118638000434 is a deficient number, since it is larger than the sum of its proper divisors (68717524846).

118638000434 is a wasteful number, since it uses less digits than its factorization.

118638000434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539465.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 118638000434 in words is "one hundred eighteen billion, six hundred thirty-eight million, four hundred thirty-four", and thus it is an aban number.