8018149 has 4 divisors (see below), whose sum is σ = 8091820. Its totient is φ = 7944480.

The previous prime is 8018107. The next prime is 8018177. The reversal of 8018149 is 9418108.

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 2924100 + 5094049 = 1710^2 + 2257^2 .

It is a cyclic number.

It is not a de Polignac number, because 8018149 - 2¹⁵ = 7985381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8018149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8018189) 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 3 ways as a sum of consecutive naturals, for example, 36672 + ... + 36889.

It is an arithmetic number, because the mean of its divisors is an integer number (2022955).

Almost surely, 2^8018149 is an apocalyptic number.

It is an amenable number.

8018149 is a deficient number, since it is larger than the sum of its proper divisors (73671).

8018149 is a wasteful number, since it uses less digits than its factorization.

8018149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73670.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 8018149 is about 2831.6336274313. The cubic root of 8018149 is about 200.1511274404.

The spelling of 8018149 in words is "eight million, eighteen thousand, one hundred forty-nine".