4491437620 has 24 divisors (see below), whose sum is σ = 9494489088. Its totient is φ = 1784676000.

The previous prime is 4491437603. The next prime is 4491437651. The reversal of 4491437620 is 267341944.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 740596 + ... + 746635.

It is an arithmetic number, because the mean of its divisors is an integer number (395603712).

Almost surely, 2^4491437620 is an apocalyptic number.

It is an amenable number.

4491437620 is an abundant number, since it is smaller than the sum of its proper divisors (5003051468).

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

4491437620 is a wasteful number, since it uses less digits than its factorization.

4491437620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487391 (or 1487389 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 4491437620 is about 67018.1887251513. The cubic root of 4491437620 is about 1649.9158353151.

The spelling of 4491437620 in words is "four billion, four hundred ninety-one million, four hundred thirty-seven thousand, six hundred twenty".