5163921938 has 90 divisors (see below), whose sum is σ = 9759084543. Its totient is φ = 2048780160.

The previous prime is 5163921899. The next prime is 5163921943. The reversal of 5163921938 is 8391293615.

It can be written as a sum of positive squares in 5 ways, for example, as 1087482529 + 4076439409 = 32977^2 + 63847^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=50813.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5163921892 and 5163921901.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 84654428 + ... + 84654488.

Almost surely, 2^5163921938 is an apocalyptic number.

5163921938 is a deficient number, since it is larger than the sum of its proper divisors (4595162605).

5163921938 is an frugal number, since it uses more digits than its factorization.

5163921938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 87 counting only the distinct ones).

The product of its digits is 349920, while the sum is 47.

The square root of 5163921938 is about 71860.4337448641. The cubic root of 5163921938 is about 1728.4622126116.

The spelling of 5163921938 in words is "five billion, one hundred sixty-three million, nine hundred twenty-one thousand, nine hundred thirty-eight".