1639954316 has 48 divisors (see below), whose sum is σ = 3853328640. Its totient is φ = 589792320.

The previous prime is 1639954313. The next prime is 1639954363. The reversal of 1639954316 is 6134599361.

It is not an unprimeable number, because it can be changed into a prime (1639954313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200786 + ... + 208793.

It is an arithmetic number, because the mean of its divisors is an integer number (80277680).

Almost surely, 2^1639954316 is an apocalyptic number.

It is an amenable number.

1639954316 is an abundant number, since it is smaller than the sum of its proper divisors (2213374324).

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

1639954316 is a wasteful number, since it uses less digits than its factorization.

1639954316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409614 (or 409612 counting only the distinct ones).

The product of its digits is 524880, while the sum is 47.

The square root of 1639954316 is about 40496.3494157189. The cubic root of 1639954316 is about 1179.2627579046.

The spelling of 1639954316 in words is "one billion, six hundred thirty-nine million, nine hundred fifty-four thousand, three hundred sixteen".