4993945640 has 16 divisors (see below), whose sum is σ = 11236377780. Its totient is φ = 1997578240.

The previous prime is 4993945637. The next prime is 4993945643. The reversal of 4993945640 is 465493994.

It is an interprime number because it is at equal distance from previous prime (4993945637) and next prime (4993945643).

It can be written as a sum of positive squares in 2 ways, for example, as 4986901924 + 7043716 = 70618^2 + 2654^2 .

It is not an unprimeable number, because it can be changed into a prime (4993945643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62424281 + ... + 62424360.

Almost surely, 2^4993945640 is an apocalyptic number.

4993945640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4993945640 is an abundant number, since it is smaller than the sum of its proper divisors (6242432140).

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

4993945640 is a wasteful number, since it uses less digits than its factorization.

4993945640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124848652 (or 124848648 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 53.

The square root of 4993945640 is about 70667.8543610884. The cubic root of 4993945640 is about 1709.2854805815.

The spelling of 4993945640 in words is "four billion, nine hundred ninety-three million, nine hundred forty-five thousand, six hundred forty".