118282987 has 4 divisors (see below), whose sum is σ = 119780320. Its totient is φ = 116785656.

The previous prime is 118282979. The next prime is 118282993. The reversal of 118282987 is 789282811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789282811 = 11489 ⋅68699.

It is a cyclic number.

It is not a de Polignac number, because 118282987 - 2³ = 118282979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118282907) 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, 748548 + ... + 748705.

It is an arithmetic number, because the mean of its divisors is an integer number (29945080).

Almost surely, 2^118282987 is an apocalyptic number.

118282987 is a deficient number, since it is larger than the sum of its proper divisors (1497333).

118282987 is an equidigital number, since it uses as much as digits as its factorization.

118282987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497332.

The product of its digits is 129024, while the sum is 46.

The square root of 118282987 is about 10875.7982235788. The cubic root of 118282987 is about 490.8785944569.

The spelling of 118282987 in words is "one hundred eighteen million, two hundred eighty-two thousand, nine hundred eighty-seven".