118367491 has 4 divisors (see below), whose sum is σ = 129128184. Its totient is φ = 107606800.

The previous prime is 118367471. The next prime is 118367507. The reversal of 118367491 is 194763811.

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 118367491 - 2¹³ = 118359299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118367401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5380330 + ... + 5380351.

It is an arithmetic number, because the mean of its divisors is an integer number (32282046).

Almost surely, 2^118367491 is an apocalyptic number.

118367491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

118367491 is a deficient number, since it is larger than the sum of its proper divisors (10760693).

118367491 is a wasteful number, since it uses less digits than its factorization.

118367491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10760692.

The product of its digits is 36288, while the sum is 40.

The square root of 118367491 is about 10879.6824861758. The cubic root of 118367491 is about 490.9954648295.

The spelling of 118367491 in words is "one hundred eighteen million, three hundred sixty-seven thousand, four hundred ninety-one".