1639307996 has 12 divisors (see below), whose sum is σ = 2876918352. Its totient is φ = 817331328.

The previous prime is 1639307959. The next prime is 1639308001. The reversal of 1639307996 is 6997039361.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579080 + ... + 581903.

It is an arithmetic number, because the mean of its divisors is an integer number (239743196).

Almost surely, 2^1639307996 is an apocalyptic number.

It is an amenable number.

1639307996 is a deficient number, since it is larger than the sum of its proper divisors (1237610356).

1639307996 is a wasteful number, since it uses less digits than its factorization.

1639307996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161340 (or 1161338 counting only the distinct ones).

The product of its (nonzero) digits is 1653372, while the sum is 53.

The square root of 1639307996 is about 40488.3686507619. The cubic root of 1639307996 is about 1179.1078183741.

The spelling of 1639307996 in words is "one billion, six hundred thirty-nine million, three hundred seven thousand, nine hundred ninety-six".