210218945 has 8 divisors (see below), whose sum is σ = 265539840. Its totient is φ = 159323760.

The previous prime is 210218933. The next prime is 210218951. The reversal of 210218945 is 549812012.

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

It is not a de Polignac number, because 210218945 - 2⁴ = 210218929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1106321 + ... + 1106510.

It is an arithmetic number, because the mean of its divisors is an integer number (33192480).

Almost surely, 2^210218945 is an apocalyptic number.

It is an amenable number.

210218945 is a deficient number, since it is larger than the sum of its proper divisors (55320895).

210218945 is a wasteful number, since it uses less digits than its factorization.

210218945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212855.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 210218945 is about 14498.9290983852. The cubic root of 210218945 is about 594.5986936856.

The spelling of 210218945 in words is "two hundred ten million, two hundred eighteen thousand, nine hundred forty-five".