5164441985 has 32 divisors (see below), whose sum is σ = 6700734720. Its totient is φ = 3806789632.

The previous prime is 5164441979. The next prime is 5164441999. The reversal of 5164441985 is 5891444615.

It is a cyclic number.

It is not a de Polignac number, because 5164441985 - 2⁴ = 5164441969 is a prime.

It is a super-2 number, since 2×5164441985² = 53342922032861480450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1286852 + ... + 1290858.

It is an arithmetic number, because the mean of its divisors is an integer number (209397960).

Almost surely, 2^5164441985 is an apocalyptic number.

It is an amenable number.

5164441985 is a deficient number, since it is larger than the sum of its proper divisors (1536292735).

5164441985 is a wasteful number, since it uses less digits than its factorization.

5164441985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345.

The product of its digits is 691200, while the sum is 47.

The square root of 5164441985 is about 71864.0521053468. The cubic root of 5164441985 is about 1728.5202338486.

The spelling of 5164441985 in words is "five billion, one hundred sixty-four million, four hundred forty-one thousand, nine hundred eighty-five".