1650221456 has 30 divisors (see below), whose sum is σ = 3462175170. Its totient is φ = 761639424.

The previous prime is 1650221453. The next prime is 1650221479. The reversal of 1650221456 is 6541220561.

It can be written as a sum of positive squares in 3 ways, for example, as 176890000 + 1473331456 = 13300^2 + 38384^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1650221453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 302441 + ... + 307848.

It is an arithmetic number, because the mean of its divisors is an integer number (115405839).

Almost surely, 2^1650221456 is an apocalyptic number.

1650221456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1650221456 is an abundant number, since it is smaller than the sum of its proper divisors (1811953714).

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

1650221456 is a wasteful number, since it uses less digits than its factorization.

1650221456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610323 (or 610304 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1650221456 is about 40622.9178666427. The cubic root of 1650221456 is about 1181.7186141572.

The spelling of 1650221456 in words is "one billion, six hundred fifty million, two hundred twenty-one thousand, four hundred fifty-six".