218950454 has 4 divisors (see below), whose sum is σ = 328425684. Its totient is φ = 109475226.

The previous prime is 218950447. The next prime is 218950469. The reversal of 218950454 is 454059812.

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

It is a super-2 number, since 2×218950454² = 95878602613612232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54737612 + ... + 54737615.

It is an arithmetic number, because the mean of its divisors is an integer number (82106421).

Almost surely, 2^218950454 is an apocalyptic number.

218950454 is a deficient number, since it is larger than the sum of its proper divisors (109475230).

218950454 is a wasteful number, since it uses less digits than its factorization.

218950454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109475229.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 218950454 is about 14796.9744880499. The cubic root of 218950454 is about 602.7195565813.

The spelling of 218950454 in words is "two hundred eighteen million, nine hundred fifty thousand, four hundred fifty-four".