118986451 has 4 divisors (see below), whose sum is σ = 125985672. Its totient is φ = 111987232.

The previous prime is 118986437. The next prime is 118986467. The reversal of 118986451 is 154689811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154689811 = 19 ⋅8141569.

It is a cyclic number.

It is not a de Polignac number, because 118986451 - 2⁵ = 118986419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118986398 and 118986407.

It is not an unprimeable number, because it can be changed into a prime (118981451) 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, 3499585 + ... + 3499618.

It is an arithmetic number, because the mean of its divisors is an integer number (31496418).

Almost surely, 2^118986451 is an apocalyptic number.

118986451 is a deficient number, since it is larger than the sum of its proper divisors (6999221).

118986451 is an equidigital number, since it uses as much as digits as its factorization.

118986451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6999220.

The product of its digits is 69120, while the sum is 43.

The square root of 118986451 is about 10908.0910795611. The cubic root of 118986451 is about 491.8498051577.

The spelling of 118986451 in words is "one hundred eighteen million, nine hundred eighty-six thousand, four hundred fifty-one".