118021869 has 24 divisors (see below), whose sum is σ = 195128960. Its totient is φ = 67337568.

The previous prime is 118021861. The next prime is 118021873. The reversal of 118021869 is 968120811.

It is not a de Polignac number, because 118021869 - 2³ = 118021861 is a prime.

It is a super-2 number, since 2×118021869² = 27858323124506322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118021861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61872 + ... + 63750.

Almost surely, 2^118021869 is an apocalyptic number.

It is an amenable number.

118021869 is a deficient number, since it is larger than the sum of its proper divisors (77107091).

118021869 is a wasteful number, since it uses less digits than its factorization.

118021869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889 (or 2886 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 118021869 is about 10863.7870468819. The cubic root of 118021869 is about 490.5171120042.

The spelling of 118021869 in words is "one hundred eighteen million, twenty-one thousand, eight hundred sixty-nine".