118491011 has 4 divisors (see below), whose sum is σ = 124727400. Its totient is φ = 112254624.

The previous prime is 118491007. The next prime is 118491017. The reversal of 118491011 is 110194811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118491011 - 2² = 118491007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118491017) 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, 3118166 + ... + 3118203.

It is an arithmetic number, because the mean of its divisors is an integer number (31181850).

Almost surely, 2^118491011 is an apocalyptic number.

118491011 is a deficient number, since it is larger than the sum of its proper divisors (6236389).

118491011 is an equidigital number, since it uses as much as digits as its factorization.

118491011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6236388.

The product of its (nonzero) digits is 288, while the sum is 26.

The square root of 118491011 is about 10885.3576422642. The cubic root of 118491011 is about 491.1661949166.

The spelling of 118491011 in words is "one hundred eighteen million, four hundred ninety-one thousand, eleven".