118011870 has 64 divisors (see below), whose sum is σ = 323231040. Its totient is φ = 30616704.

The previous prime is 118011791. The next prime is 118011871. The reversal of 118011870 is 78110811.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118011871) 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, 4084 + ... + 15896.

It is an arithmetic number, because the mean of its divisors is an integer number (5050485).

Almost surely, 2^118011870 is an apocalyptic number.

118011870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 118011870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161615520).

118011870 is an abundant number, since it is smaller than the sum of its proper divisors (205219170).

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

118011870 is a wasteful number, since it uses less digits than its factorization.

118011870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11866 (or 11860 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 27.

The square root of 118011870 is about 10863.3268384966. The cubic root of 118011870 is about 490.5032591503.

The spelling of 118011870 in words is "one hundred eighteen million, eleven thousand, eight hundred seventy".