163940998 has 32 divisors (see below), whose sum is σ = 269660160. Its totient is φ = 74299680.

The previous prime is 163940993. The next prime is 163941023. The reversal of 163940998 is 899049361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163940993) 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, 432373 + ... + 432751.

It is an arithmetic number, because the mean of its divisors is an integer number (8426880).

Almost surely, 2^163940998 is an apocalyptic number.

163940998 is a deficient number, since it is larger than the sum of its proper divisors (105719162).

163940998 is a wasteful number, since it uses less digits than its factorization.

163940998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 163940998 is about 12803.9446265594. The cubic root of 163940998 is about 547.3047174388.

The spelling of 163940998 in words is "one hundred sixty-three million, nine hundred forty thousand, nine hundred ninety-eight".