118382029391 has 4 divisors (see below), whose sum is σ = 119001830784. Its totient is φ = 117762228000.

The previous prime is 118382029361. The next prime is 118382029399. The reversal of 118382029391 is 193920283811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193920283811 = 401057 ⋅483523.

It is a cyclic number.

It is not a de Polignac number, because 118382029391 - 2¹⁴ = 118382013007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118382029399) 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, 309900410 + ... + 309900791.

It is an arithmetic number, because the mean of its divisors is an integer number (29750457696).

Almost surely, 2^118382029391 is an apocalyptic number.

118382029391 is a deficient number, since it is larger than the sum of its proper divisors (619801393).

118382029391 is an equidigital number, since it uses as much as digits as its factorization.

118382029391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619801392.

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 118382029391 in words is "one hundred eighteen billion, three hundred eighty-two million, twenty-nine thousand, three hundred ninety-one".