118001420187 has 16 divisors (see below), whose sum is σ = 190388846592. Its totient is φ = 63462948480.

The previous prime is 118001420161. The next prime is 118001420191. The reversal of 118001420187 is 781024100811.

It is not a de Polignac number, because 118001420187 - 2⁷ = 118001420059 is a prime.

It is a super-2 number, since 2×118001420187² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118001420087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165267739 + ... + 165268452.

It is an arithmetic number, because the mean of its divisors is an integer number (11899302912).

Almost surely, 2^118001420187 is an apocalyptic number.

118001420187 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

118001420187 is a deficient number, since it is larger than the sum of its proper divisors (72387426405).

118001420187 is a wasteful number, since it uses less digits than its factorization.

118001420187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330536218.

The product of its (nonzero) digits is 3584, while the sum is 33.

Adding to 118001420187 its reverse (781024100811), we get a palindrome (899025520998).

The spelling of 118001420187 in words is "one hundred eighteen billion, one million, four hundred twenty thousand, one hundred eighty-seven".