1640322056 has 16 divisors (see below), whose sum is σ = 3076034640. Its totient is φ = 820046160.

The previous prime is 1640322049. The next prime is 1640322059. The reversal of 1640322056 is 6502230461.

It is not an unprimeable number, because it can be changed into a prime (1640322059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98615 + ... + 114041.

It is an arithmetic number, because the mean of its divisors is an integer number (192252165).

Almost surely, 2^1640322056 is an apocalyptic number.

It is an amenable number.

1640322056 is a deficient number, since it is larger than the sum of its proper divisors (1435712584).

1640322056 is a wasteful number, since it uses less digits than its factorization.

1640322056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28724 (or 28720 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1640322056 is about 40500.8895704773. The cubic root of 1640322056 is about 1179.3508964728.

The spelling of 1640322056 in words is "one billion, six hundred forty million, three hundred twenty-two thousand, fifty-six".