1650666117 has 16 divisors (see below), whose sum is σ = 2227546112. Its totient is φ = 1087188480.

The previous prime is 1650666071. The next prime is 1650666133. The reversal of 1650666117 is 7116660561.

It is not a de Polignac number, because 1650666117 - 2¹⁴ = 1650649733 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 (1650666137) 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 15 ways as a sum of consecutive naturals, for example, 82833 + ... + 100809.

It is an arithmetic number, because the mean of its divisors is an integer number (139221632).

Almost surely, 2^1650666117 is an apocalyptic number.

It is an amenable number.

1650666117 is a deficient number, since it is larger than the sum of its proper divisors (576879995).

1650666117 is a wasteful number, since it uses less digits than its factorization.

1650666117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18348.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 1650666117 is about 40628.3905292838. The cubic root of 1650666117 is about 1181.8247447595.

The spelling of 1650666117 in words is "one billion, six hundred fifty million, six hundred sixty-six thousand, one hundred seventeen".