1650779968 has 28 divisors (see below), whose sum is σ = 3468460932. Its totient is φ = 776837120.

The previous prime is 1650779959. The next prime is 1650779981. The reversal of 1650779968 is 8699770561.

It can be written as a sum of positive squares in 2 ways, for example, as 1224440064 + 426339904 = 34992^2 + 20648^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 757543 + ... + 759718.

Almost surely, 2^1650779968 is an apocalyptic number.

It is an amenable number.

1650779968 is an abundant number, since it is smaller than the sum of its proper divisors (1817680964).

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

1650779968 is a wasteful number, since it uses less digits than its factorization.

1650779968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517290 (or 1517280 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 58.

The square root of 1650779968 is about 40629.7916312649. The cubic root of 1650779968 is about 1181.8519153735.

The spelling of 1650779968 in words is "one billion, six hundred fifty million, seven hundred seventy-nine thousand, nine hundred sixty-eight".