5130803981 has 4 divisors (see below), whose sum is σ = 5131159452. Its totient is φ = 5130448512.

The previous prime is 5130803969. The next prime is 5130803999. The reversal of 5130803981 is 1893080315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 776123881 + 4354680100 = 27859^2 + 65990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5130803981 is a prime.

It is a super-3 number, since 3×5130803981³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5130803941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155126 + ... + 185271.

It is an arithmetic number, because the mean of its divisors is an integer number (1282789863).

Almost surely, 2^5130803981 is an apocalyptic number.

It is an amenable number.

5130803981 is a deficient number, since it is larger than the sum of its proper divisors (355471).

5130803981 is a wasteful number, since it uses less digits than its factorization.

5130803981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355470.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 5130803981 is about 71629.6306077310. The cubic root of 5130803981 is about 1724.7592165214.

The spelling of 5130803981 in words is "five billion, one hundred thirty million, eight hundred three thousand, nine hundred eighty-one".