163216994 has 16 divisors (see below), whose sum is σ = 250459776. Its totient is φ = 79736400.

The previous prime is 163216981. The next prime is 163217003. The reversal of 163216994 is 499612361.

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, 75164 + ... + 77304.

It is an arithmetic number, because the mean of its divisors is an integer number (15653736).

Almost surely, 2^163216994 is an apocalyptic number.

163216994 is a deficient number, since it is larger than the sum of its proper divisors (87242782).

163216994 is a wasteful number, since it uses less digits than its factorization.

163216994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001.

The product of its digits is 69984, while the sum is 41.

The square root of 163216994 is about 12775.6406492982. The cubic root of 163216994 is about 546.4978508247.

The spelling of 163216994 in words is "one hundred sixty-three million, two hundred sixteen thousand, nine hundred ninety-four".