163860149 has 4 divisors (see below), whose sum is σ = 167856780. Its totient is φ = 159863520.

The previous prime is 163860139. The next prime is 163860167. The reversal of 163860149 is 941068361.

163860149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58140625 + 105719524 = 7625^2 + 10282^2 .

It is a cyclic number.

It is not a de Polignac number, because 163860149 - 2⁴ = 163860133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163860139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1998254 + ... + 1998335.

It is an arithmetic number, because the mean of its divisors is an integer number (41964195).

Almost surely, 2^163860149 is an apocalyptic number.

It is an amenable number.

163860149 is a deficient number, since it is larger than the sum of its proper divisors (3996631).

163860149 is an equidigital number, since it uses as much as digits as its factorization.

163860149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996630.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 163860149 is about 12800.7870461156. The cubic root of 163860149 is about 547.2147332055.

The spelling of 163860149 in words is "one hundred sixty-three million, eight hundred sixty thousand, one hundred forty-nine".