4945515640 has 32 divisors (see below), whose sum is σ = 11983366080. Its totient is φ = 1826036352.

The previous prime is 4945515629. The next prime is 4945515661. The reversal of 4945515640 is 465155494.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4754784 + ... + 4755823.

It is an arithmetic number, because the mean of its divisors is an integer number (374480190).

Almost surely, 2^4945515640 is an apocalyptic number.

4945515640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4945515640 is an abundant number, since it is smaller than the sum of its proper divisors (7037850440).

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

4945515640 is a wasteful number, since it uses less digits than its factorization.

4945515640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510631 (or 9510627 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The square root of 4945515640 is about 70324.3602174950. The cubic root of 4945515640 is about 1703.7421187989.

The spelling of 4945515640 in words is "four billion, nine hundred forty-five million, five hundred fifteen thousand, six hundred forty".