1650866872 has 16 divisors (see below), whose sum is σ = 3277456560. Its totient is φ = 776878464.

The previous prime is 1650866857. The next prime is 1650866873. The reversal of 1650866872 is 2786680561.

It is a super-2 number, since 2×1650866872² = 5450722858134128768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650866873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6069228 + ... + 6069499.

It is an arithmetic number, because the mean of its divisors is an integer number (204841035).

Almost surely, 2^1650866872 is an apocalyptic number.

It is an amenable number.

1650866872 is a deficient number, since it is larger than the sum of its proper divisors (1626589688).

1650866872 is a wasteful number, since it uses less digits than its factorization.

1650866872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12138750 (or 12138746 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 1650866872 is about 40630.8610787416. The cubic root of 1650866872 is about 1181.8726542280.

The spelling of 1650866872 in words is "one billion, six hundred fifty million, eight hundred sixty-six thousand, eight hundred seventy-two".