216163069 has 4 divisors (see below), whose sum is σ = 216194560. Its totient is φ = 216131580.

The previous prime is 216163067. The next prime is 216163117. The reversal of 216163069 is 960361612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 216163069 - 2¹ = 216163067 is a prime.

It is a super-2 number, since 2×216163069² = 93452944798997522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216163061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579 + ... + 20800.

It is an arithmetic number, because the mean of its divisors is an integer number (54048640).

Almost surely, 2^216163069 is an apocalyptic number.

It is an amenable number.

216163069 is a deficient number, since it is larger than the sum of its proper divisors (31491).

216163069 is a wasteful number, since it uses less digits than its factorization.

216163069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31490.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 216163069 is about 14702.4851300724. The cubic root of 216163069 is about 600.1509518342.

The spelling of 216163069 in words is "two hundred sixteen million, one hundred sixty-three thousand, sixty-nine".