118638000433 has 4 divisors (see below), whose sum is σ = 120582885748. Its totient is φ = 116693115120.

The previous prime is 118638000427. The next prime is 118638000451. The reversal of 118638000433 is 334000836811.

It is the 140617-th star number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334000836811 = 12073 ⋅27665107.

It can be written as a sum of positive squares in 2 ways, for example, as 21489214464 + 97148785969 = 146592^2 + 311687^2 .

It is a cyclic number.

It is not a de Polignac number, because 118638000433 - 2²⁹ = 118101129521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118638000392 and 118638000401.

It is not an unprimeable number, because it can be changed into a prime (118638000473) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 972442566 + ... + 972442687.

It is an arithmetic number, because the mean of its divisors is an integer number (30145721437).

Almost surely, 2^118638000433 is an apocalyptic number.

It is an amenable number.

118638000433 is a deficient number, since it is larger than the sum of its proper divisors (1944885315).

118638000433 is an equidigital number, since it uses as much as digits as its factorization.

118638000433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944885314.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 118638000433 in words is "one hundred eighteen billion, six hundred thirty-eight million, four hundred thirty-three", and thus it is an aban number.