49158189 has 24 divisors (see below), whose sum is σ = 72808632. Its totient is φ = 31948800.

The previous prime is 49158181. The next prime is 49158191. The reversal of 49158189 is 98185194.

49158189 is a `hidden beast` number, since 491 + 5 + 81 + 89 = 666.

49158189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 42029289 + 7128900 = 6483^2 + 2670^2 .

It is not a de Polignac number, because 49158189 - 2³ = 49158181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49158181) 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 23 ways as a sum of consecutive naturals, for example, 122389 + ... + 122789.

It is an arithmetic number, because the mean of its divisors is an integer number (3033693).

Almost surely, 2^49158189 is an apocalyptic number.

It is an amenable number.

49158189 is a deficient number, since it is larger than the sum of its proper divisors (23650443).

49158189 is a wasteful number, since it uses less digits than its factorization.

49158189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717 (or 714 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 49158189 is about 7011.2901095305. The cubic root of 49158189 is about 366.3239316169.

The spelling of 49158189 in words is "forty-nine million, one hundred fifty-eight thousand, one hundred eighty-nine".