216242619 has 16 divisors (see below), whose sum is σ = 301689600. Its totient is φ = 137513376.

The previous prime is 216242603. The next prime is 216242633. The reversal of 216242619 is 916242612.

It is not a de Polignac number, because 216242619 - 2⁴ = 216242603 is a prime.

It is a super-2 number, since 2×216242619² = 93521740543958322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216242619.

It is not an unprimeable number, because it can be changed into a prime (216242699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22017 + ... + 30285.

It is an arithmetic number, because the mean of its divisors is an integer number (18855600).

Almost surely, 2^216242619 is an apocalyptic number.

216242619 is a deficient number, since it is larger than the sum of its proper divisors (85446981).

216242619 is a wasteful number, since it uses less digits than its factorization.

216242619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8674.

The product of its digits is 10368, while the sum is 33.

The square root of 216242619 is about 14705.1902061823. The cubic root of 216242619 is about 600.2245631640.

The spelling of 216242619 in words is "two hundred sixteen million, two hundred forty-two thousand, six hundred nineteen".