216101814 has 32 divisors (see below), whose sum is σ = 440517120. Its totient is φ = 70660512.

The previous prime is 216101761. The next prime is 216101819. The reversal of 216101814 is 418101612.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216101819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75864 + ... + 78660.

It is an arithmetic number, because the mean of its divisors is an integer number (13766160).

Almost surely, 2^216101814 is an apocalyptic number.

216101814 is an abundant number, since it is smaller than the sum of its proper divisors (224415306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216101814 is a wasteful number, since it uses less digits than its factorization.

216101814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 216101814 is about 14700.4018312426. The cubic root of 216101814 is about 600.0942574140.

The spelling of 216101814 in words is "two hundred sixteen million, one hundred one thousand, eight hundred fourteen".