118828139 has 4 divisors (see below), whose sum is σ = 118853256. Its totient is φ = 118803024.

The previous prime is 118828133. The next prime is 118828153. The reversal of 118828139 is 931828811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931828811 = 307 ⋅3035273.

It is a cyclic number.

It is not a de Polignac number, because 118828139 - 2⁴ = 118828123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118828096 and 118828105.

It is not an unprimeable number, because it can be changed into a prime (118828133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3074 + ... + 15719.

It is an arithmetic number, because the mean of its divisors is an integer number (29713314).

Almost surely, 2^118828139 is an apocalyptic number.

118828139 is a deficient number, since it is larger than the sum of its proper divisors (25117).

118828139 is an equidigital number, since it uses as much as digits as its factorization.

118828139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25116.

The product of its digits is 27648, while the sum is 41.

The square root of 118828139 is about 10900.8320324643. The cubic root of 118828139 is about 491.6315722277.

The spelling of 118828139 in words is "one hundred eighteen million, eight hundred twenty-eight thousand, one hundred thirty-nine".