218113454 has 16 divisors (see below), whose sum is σ = 352628640. Its totient is φ = 100584480.

The previous prime is 218113433. The next prime is 218113463. The reversal of 218113454 is 454311812.

It is a congruent number.

It is an unprimeable number.

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, 37844 + ... + 43224.

It is an arithmetic number, because the mean of its divisors is an integer number (22039290).

Almost surely, 2^218113454 is an apocalyptic number.

218113454 is a deficient number, since it is larger than the sum of its proper divisors (134515186).

218113454 is a wasteful number, since it uses less digits than its factorization.

218113454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6955.

The product of its digits is 3840, while the sum is 29.

The square root of 218113454 is about 14768.6645977218. The cubic root of 218113454 is about 601.9505538796.

The spelling of 218113454 in words is "two hundred eighteen million, one hundred thirteen thousand, four hundred fifty-four".