118001778 has 8 divisors (see below), whose sum is σ = 236003568. Its totient is φ = 39333924.

The previous prime is 118001771. The next prime is 118001789. The reversal of 118001778 is 877100811.

It is a sphenic number, since it is the product of 3 distinct primes.

118001778 is an admirable number.

It is a super-2 number, since 2×118001778² = 27848839222322568, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118001771) 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, 9833476 + ... + 9833487.

It is an arithmetic number, because the mean of its divisors is an integer number (29500446).

Almost surely, 2^118001778 is an apocalyptic number.

118001778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118001778 is a wasteful number, since it uses less digits than its factorization.

118001778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19666968.

The product of its (nonzero) digits is 3136, while the sum is 33.

The square root of 118001778 is about 10862.8623299755. The cubic root of 118001778 is about 490.4892766585.

The spelling of 118001778 in words is "one hundred eighteen million, one thousand, seven hundred seventy-eight".