650982109 has 4 divisors (see below), whose sum is σ = 651515616. Its totient is φ = 650448604.

The previous prime is 650982103. The next prime is 650982119. The reversal of 650982109 is 901289056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 650982109 - 2⁵ = 650982077 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 (650982103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264919 + ... + 267364.

It is an arithmetic number, because the mean of its divisors is an integer number (162878904).

Almost surely, 2^650982109 is an apocalyptic number.

It is an amenable number.

650982109 is a deficient number, since it is larger than the sum of its proper divisors (533507).

650982109 is a wasteful number, since it uses less digits than its factorization.

650982109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533506.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 650982109 is about 25514.3510401499. The cubic root of 650982109 is about 866.6751633454.

The spelling of 650982109 in words is "six hundred fifty million, nine hundred eighty-two thousand, one hundred nine".