5145581868 has 48 divisors (see below), whose sum is σ = 13954133760. Its totient is φ = 1445246784.

The previous prime is 5145581867. The next prime is 5145581869. The reversal of 5145581868 is 8681855415.

It is an interprime number because it is at equal distance from previous prime (5145581867) and next prime (5145581869).

It is a self number, because there is not a number n which added to its sum of digits gives 5145581868.

It is not an unprimeable number, because it can be changed into a prime (5145581867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 514171 + ... + 524082.

It is an arithmetic number, because the mean of its divisors is an integer number (290711120).

Almost surely, 2^5145581868 is an apocalyptic number.

It is an amenable number.

5145581868 is an abundant number, since it is smaller than the sum of its proper divisors (8808551892).

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

5145581868 is a wasteful number, since it uses less digits than its factorization.

5145581868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038326 (or 1038324 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 51.

The square root of 5145581868 is about 71732.7112829287. The cubic root of 5145581868 is about 1726.4135293916.

The spelling of 5145581868 in words is "five billion, one hundred forty-five million, five hundred eighty-one thousand, eight hundred sixty-eight".