1650111264 has 240 divisors, whose sum is σ = 5137292160. Its totient is φ = 518538240.

The previous prime is 1650111263. The next prime is 1650111269. The reversal of 1650111264 is 4621110561.

1650111264 is a `hidden beast` number, since 1 + 650 + 1 + 1 + 1 + 2 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1650111263) 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 39 ways as a sum of consecutive naturals, for example, 5305669 + ... + 5305979.

It is an arithmetic number, because the mean of its divisors is an integer number (21405384).

Almost surely, 2^1650111264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1650111264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2568646080).

1650111264 is an abundant number, since it is smaller than the sum of its proper divisors (3487180896).

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

1650111264 is a wasteful number, since it uses less digits than its factorization.

1650111264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1650111264 is about 40621.5615652574. The cubic root of 1650111264 is about 1181.6923108519.

The spelling of 1650111264 in words is "one billion, six hundred fifty million, one hundred eleven thousand, two hundred sixty-four".