5146579981 has 8 divisors (see below), whose sum is σ = 5501329344. Its totient is φ = 4802746080.

The previous prime is 5146579957. The next prime is 5146579993. The reversal of 5146579981 is 1899756415.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5146579981 is a prime.

It is a super-2 number, since 2×5146579981² = 52974571001659920722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5146519981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2727891 + ... + 2729776.

It is an arithmetic number, because the mean of its divisors is an integer number (687666168).

Almost surely, 2^5146579981 is an apocalyptic number.

It is an amenable number.

5146579981 is a deficient number, since it is larger than the sum of its proper divisors (354749363).

5146579981 is a wasteful number, since it uses less digits than its factorization.

5146579981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5457731.

The product of its digits is 2721600, while the sum is 55.

The square root of 5146579981 is about 71739.6681132552. The cubic root of 5146579981 is about 1726.5251490572.

The spelling of 5146579981 in words is "five billion, one hundred forty-six million, five hundred seventy-nine thousand, nine hundred eighty-one".