4093638640 has 80 divisors (see below), whose sum is σ = 11714125248. Its totient is φ = 1295566848.

The previous prime is 4093638617. The next prime is 4093638707. The reversal of 4093638640 is 468363904.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273877 + ... + 288436.

Almost surely, 2^4093638640 is an apocalyptic number.

4093638640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4093638640 is an abundant number, since it is smaller than the sum of its proper divisors (7620486608).

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

4093638640 is a wasteful number, since it uses less digits than its factorization.

4093638640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562346 (or 562340 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 4093638640 is about 63981.5492153793. The cubic root of 4093638640 is about 1599.6924721454.

The spelling of 4093638640 in words is "four billion, ninety-three million, six hundred thirty-eight thousand, six hundred forty".