4494032640 has 108 divisors (see below), whose sum is σ = 15548924664. Its totient is φ = 1198405632.

The previous prime is 4494032633. The next prime is 4494032677. The reversal of 4494032640 is 462304944.

4494032640 is a `hidden beast` number, since 4 + 4 + 9 + 4 + 0 + 3 + 2 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4494032595 and 4494032604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183534 + ... + 206573.

Almost surely, 2^4494032640 is an apocalyptic number.

4494032640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4494032640 is an abundant number, since it is smaller than the sum of its proper divisors (11054892024).

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

4494032640 is a wasteful number, since it uses less digits than its factorization.

4494032640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390134 (or 390117 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 4494032640 is about 67037.5464944832. The cubic root of 4494032640 is about 1650.2335316840.

The spelling of 4494032640 in words is "four billion, four hundred ninety-four million, thirty-two thousand, six hundred forty".