118038021945 has 32 divisors (see below), whose sum is σ = 195179410944. Its totient is φ = 60874598400.

The previous prime is 118038021923. The next prime is 118038021947. The reversal of 118038021945 is 549120830811.

It is not a de Polignac number, because 118038021945 - 2¹⁰ = 118038020921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 118038021897 and 118038021906.

It is not an unprimeable number, because it can be changed into a prime (118038021947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 779761 + ... + 918750.

It is an arithmetic number, because the mean of its divisors is an integer number (6099356592).

Almost surely, 2^118038021945 is an apocalyptic number.

118038021945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118038021945 is a deficient number, since it is larger than the sum of its proper divisors (77141388999).

118038021945 is a wasteful number, since it uses less digits than its factorization.

118038021945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698673.

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 118038021945 in words is "one hundred eighteen billion, thirty-eight million, twenty-one thousand, nine hundred forty-five".