163749061 has 8 divisors (see below), whose sum is σ = 187457984. Its totient is φ = 140119200.

The previous prime is 163749059. The next prime is 163749073. The reversal of 163749061 is 160947361.

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 163749061 - 2¹ = 163749059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163749061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163743061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15255 + ... + 23668.

It is an arithmetic number, because the mean of its divisors is an integer number (23432248).

Almost surely, 2^163749061 is an apocalyptic number.

It is an amenable number.

163749061 is a deficient number, since it is larger than the sum of its proper divisors (23708923).

163749061 is an equidigital number, since it uses as much as digits as its factorization.

163749061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39531.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 163749061 is about 12796.4472022511. The cubic root of 163749061 is about 547.0910449404.

The spelling of 163749061 in words is "one hundred sixty-three million, seven hundred forty-nine thousand, sixty-one".