163349823 has 24 divisors (see below), whose sum is σ = 269539968. Its totient is φ = 86160672.

The previous prime is 163349803. The next prime is 163349833. The reversal of 163349823 is 328943361.

It is not a de Polignac number, because 163349823 - 2⁶ = 163349759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163349803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19465 + ... + 26562.

It is an arithmetic number, because the mean of its divisors is an integer number (11230832).

Almost surely, 2^163349823 is an apocalyptic number.

163349823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163349823 is a deficient number, since it is larger than the sum of its proper divisors (106190145).

163349823 is a wasteful number, since it uses less digits than its factorization.

163349823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46063 (or 46050 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 163349823 is about 12780.8381180578. The cubic root of 163349823 is about 546.6460606368.

The spelling of 163349823 in words is "one hundred sixty-three million, three hundred forty-nine thousand, eight hundred twenty-three".