18113955 has 8 divisors (see below), whose sum is σ = 28982352. Its totient is φ = 9660768.

The previous prime is 18113939. The next prime is 18113957. The reversal of 18113955 is 55931181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18113955 - 2⁴ = 18113939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18113957) 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 7 ways as a sum of consecutive naturals, for example, 603784 + ... + 603813.

It is an arithmetic number, because the mean of its divisors is an integer number (3622794).

Almost surely, 2^18113955 is an apocalyptic number.

18113955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18113955 is a deficient number, since it is larger than the sum of its proper divisors (10868397).

18113955 is a wasteful number, since it uses less digits than its factorization.

18113955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207605.

The product of its digits is 5400, while the sum is 33.

The square root of 18113955 is about 4256.0492243394. The cubic root of 18113955 is about 262.6260256535.

The spelling of 18113955 in words is "eighteen million, one hundred thirteen thousand, nine hundred fifty-five".