118243878 has 64 divisors (see below), whose sum is σ = 256746240. Its totient is φ = 36191232.

The previous prime is 118243871. The next prime is 118243883. The reversal of 118243878 is 878342811.

It is a super-2 number, since 2×118243878² = 27963229368957768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118243871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 863026 + ... + 863162.

It is an arithmetic number, because the mean of its divisors is an integer number (4011660).

Almost surely, 2^118243878 is an apocalyptic number.

118243878 is an abundant number, since it is smaller than the sum of its proper divisors (138502362).

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

118243878 is a wasteful number, since it uses less digits than its factorization.

118243878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its digits is 86016, while the sum is 42.

The square root of 118243878 is about 10874.0000919625. Note that the first 4 decimals coincide. The cubic root of 118243878 is about 490.8244872471.

The spelling of 118243878 in words is "one hundred eighteen million, two hundred forty-three thousand, eight hundred seventy-eight".