216738741 has 8 divisors (see below), whose sum is σ = 289729440. Its totient is φ = 144120272.

The previous prime is 216738733. The next prime is 216738773. The reversal of 216738741 is 147837612.

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

It is a cyclic number.

It is not a de Polignac number, because 216738741 - 2³ = 216738733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216738741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216730741) 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 7 ways as a sum of consecutive naturals, for example, 91695 + ... + 94028.

It is an arithmetic number, because the mean of its divisors is an integer number (36216180).

Almost surely, 2^216738741 is an apocalyptic number.

It is an amenable number.

216738741 is a deficient number, since it is larger than the sum of its proper divisors (72990699).

216738741 is a wasteful number, since it uses less digits than its factorization.

216738741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186115.

The product of its digits is 56448, while the sum is 39.

The square root of 216738741 is about 14722.0494836826. The cubic root of 216738741 is about 600.6832411184.

The spelling of 216738741 in words is "two hundred sixteen million, seven hundred thirty-eight thousand, seven hundred forty-one".