163399893 has 8 divisors (see below), whose sum is σ = 218345088. Its totient is φ = 108693984.

The previous prime is 163399823. The next prime is 163399909. The reversal of 163399893 is 398993361.

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

It is not a de Polignac number, because 163399893 - 2⁹ = 163399381 is a prime.

It is a super-2 number, since 2×163399893² = 53399050064822898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163399813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58221 + ... + 60962.

It is an arithmetic number, because the mean of its divisors is an integer number (27293136).

Almost surely, 2^163399893 is an apocalyptic number.

It is an amenable number.

163399893 is a deficient number, since it is larger than the sum of its proper divisors (54945195).

163399893 is a wasteful number, since it uses less digits than its factorization.

163399893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119643.

The product of its digits is 944784, while the sum is 51.

The square root of 163399893 is about 12782.7967597079. The cubic root of 163399893 is about 546.7019075950.

The spelling of 163399893 in words is "one hundred sixty-three million, three hundred ninety-nine thousand, eight hundred ninety-three".