163272749 has 8 divisors (see below), whose sum is σ = 169985400. Its totient is φ = 156681216.

The previous prime is 163272673. The next prime is 163272761. The reversal of 163272749 is 947272361.

It can be written as a sum of positive squares in 4 ways, for example, as 27899524 + 135373225 = 5282^2 + 11635^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163272749 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163272779) 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, 27524 + ... + 32925.

It is an arithmetic number, because the mean of its divisors is an integer number (21248175).

Almost surely, 2^163272749 is an apocalyptic number.

It is an amenable number.

163272749 is a deficient number, since it is larger than the sum of its proper divisors (6712651).

163272749 is an equidigital number, since it uses as much as digits as its factorization.

163272749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60559.

The product of its digits is 127008, while the sum is 41.

The square root of 163272749 is about 12777.8225453322. The cubic root of 163272749 is about 546.5600717125.

The spelling of 163272749 in words is "one hundred sixty-three million, two hundred seventy-two thousand, seven hundred forty-nine".