163353949 has 8 divisors (see below), whose sum is σ = 181225440. Its totient is φ = 145986000.

The previous prime is 163353943. The next prime is 163353959. The reversal of 163353949 is 949353361.

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

It is a cyclic number.

It is not a de Polignac number, because 163353949 - 2⁷ = 163353821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163353943) 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, 125202 + ... + 126499.

It is an arithmetic number, because the mean of its divisors is an integer number (22653180).

Almost surely, 2^163353949 is an apocalyptic number.

It is an amenable number.

163353949 is a deficient number, since it is larger than the sum of its proper divisors (17871491).

163353949 is a wasteful number, since it uses less digits than its factorization.

163353949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251771.

The product of its digits is 262440, while the sum is 43.

The square root of 163353949 is about 12780.9995305532. Note that the first 3 decimals coincide. The cubic root of 163353949 is about 546.6506631163.

The spelling of 163353949 in words is "one hundred sixty-three million, three hundred fifty-three thousand, nine hundred forty-nine".