501689149 has 16 divisors (see below), whose sum is σ = 553392000. Its totient is φ = 451953216.

The previous prime is 501689147. The next prime is 501689171. The reversal of 501689149 is 941986105.

It is not a de Polignac number, because 501689149 - 2¹ = 501689147 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 (501689147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135282 + ... + 138940.

It is an arithmetic number, because the mean of its divisors is an integer number (34587000).

Almost surely, 2^501689149 is an apocalyptic number.

It is an amenable number.

501689149 is a deficient number, since it is larger than the sum of its proper divisors (51702851).

501689149 is a wasteful number, since it uses less digits than its factorization.

501689149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3924.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 501689149 is about 22398.4184486316. The cubic root of 501689149 is about 794.5933070106.

The spelling of 501689149 in words is "five hundred one million, six hundred eighty-nine thousand, one hundred forty-nine".