650519149 has 6 divisors (see below), whose sum is σ = 756726414. Its totient is φ = 557587800.

The previous prime is 650519137. The next prime is 650519153. The reversal of 650519149 is 941915056.

It can be written as a sum of positive squares in only one way, i.e., 350363524 + 300155625 = 18718^2 + 17325^2 .

It is not a de Polignac number, because 650519149 - 2⁵ = 650519117 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 (650519449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6637902 + ... + 6637999.

It is an arithmetic number, because the mean of its divisors is an integer number (126121069).

Almost surely, 2^650519149 is an apocalyptic number.

It is an amenable number.

650519149 is a deficient number, since it is larger than the sum of its proper divisors (106207265).

650519149 is a wasteful number, since it uses less digits than its factorization.

650519149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13275915 (or 13275908 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 650519149 is about 25505.2768853820. The cubic root of 650519149 is about 866.4696630295.

The spelling of 650519149 in words is "six hundred fifty million, five hundred nineteen thousand, one hundred forty-nine".