654488149 has 12 divisors (see below), whose sum is σ = 775711404. Its totient is φ = 550402944.

The previous prime is 654488141. The next prime is 654488167. The reversal of 654488149 is 941884456.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 270602500 + 383885649 = 16450^2 + 19593^2 .

It is not a de Polignac number, because 654488149 - 2³ = 654488141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654488141) 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 11 ways as a sum of consecutive naturals, for example, 123412 + ... + 128605.

It is an arithmetic number, because the mean of its divisors is an integer number (64642617).

Almost surely, 2^654488149 is an apocalyptic number.

It is an amenable number.

654488149 is a deficient number, since it is larger than the sum of its proper divisors (121223255).

654488149 is a wasteful number, since it uses less digits than its factorization.

654488149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252084 (or 252077 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The square root of 654488149 is about 25582.9659930197. The cubic root of 654488149 is about 868.2282828287.

The spelling of 654488149 in words is "six hundred fifty-four million, four hundred eighty-eight thousand, one hundred forty-nine".