210136918 has 8 divisors (see below), whose sum is σ = 315409248. Its totient is φ = 105000504.

The previous prime is 210136907. The next prime is 210136933. The reversal of 210136918 is 819631012.

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

It is a self number, because there is not a number n which added to its sum of digits gives 210136918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30021 + ... + 36352.

It is an arithmetic number, because the mean of its divisors is an integer number (39426156).

Almost surely, 2^210136918 is an apocalyptic number.

210136918 is a deficient number, since it is larger than the sum of its proper divisors (105272330).

210136918 is a wasteful number, since it uses less digits than its factorization.

210136918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67958.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 210136918 is about 14496.1000962328. The cubic root of 210136918 is about 594.5213465621.

The spelling of 210136918 in words is "two hundred ten million, one hundred thirty-six thousand, nine hundred eighteen".