191240118 has 24 divisors (see below), whose sum is σ = 414620856. Its totient is φ = 63705600.

The previous prime is 191240099. The next prime is 191240143. The reversal of 191240118 is 811042191.

It is a junction number, because it is equal to n+sod(n) for n = 191240091 and 191240100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40438 + ... + 44918.

It is an arithmetic number, because the mean of its divisors is an integer number (17275869).

Almost surely, 2^191240118 is an apocalyptic number.

191240118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

191240118 is an abundant number, since it is smaller than the sum of its proper divisors (223380738).

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

191240118 is a wasteful number, since it uses less digits than its factorization.

191240118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6860 (or 6857 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 191240118 is about 13828.9593968599. The cubic root of 191240118 is about 576.1377527882.

The spelling of 191240118 in words is "one hundred ninety-one million, two hundred forty thousand, one hundred eighteen".