216190135 has 8 divisors (see below), whose sum is σ = 296489376. Its totient is φ = 148244640.

The previous prime is 216190129. The next prime is 216190141. The reversal of 216190135 is 531091612.

It is an interprime number because it is at equal distance from previous prime (216190129) and next prime (216190141).

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

It is not a de Polignac number, because 216190135 - 2¹⁹ = 215665847 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 3088396 + ... + 3088465.

It is an arithmetic number, because the mean of its divisors is an integer number (37061172).

Almost surely, 2^216190135 is an apocalyptic number.

216190135 is a deficient number, since it is larger than the sum of its proper divisors (80299241).

216190135 is an equidigital number, since it uses as much as digits as its factorization.

216190135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6176873.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 216190135 is about 14703.4055578971. The cubic root of 216190135 is about 600.1759992946.

The spelling of 216190135 in words is "two hundred sixteen million, one hundred ninety thousand, one hundred thirty-five".