1650727664 has 40 divisors (see below), whose sum is σ = 3341036160. Its totient is φ = 788604608.

The previous prime is 1650727651. The next prime is 1650727669. The reversal of 1650727664 is 4667270561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650727669) 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 7 ways as a sum of consecutive naturals, for example, 434927 + ... + 438705.

It is an arithmetic number, because the mean of its divisors is an integer number (83525904).

Almost surely, 2^1650727664 is an apocalyptic number.

It is an amenable number.

1650727664 is an abundant number, since it is smaller than the sum of its proper divisors (1690308496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1650727664 is a wasteful number, since it uses less digits than its factorization.

1650727664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4997 (or 4991 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 1650727664 is about 40629.1479605467. The cubic root of 1650727664 is about 1181.8394331456.

The spelling of 1650727664 in words is "one billion, six hundred fifty million, seven hundred twenty-seven thousand, six hundred sixty-four".