5131848961 has 4 divisors (see below), whose sum is σ = 5308809300. Its totient is φ = 4954888624.

The previous prime is 5131848959. The next prime is 5131848983. The reversal of 5131848961 is 1698481315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1698481315 = 5 ⋅339696263.

It can be written as a sum of positive squares in 2 ways, for example, as 3699680625 + 1432168336 = 60825^2 + 37844^2 .

It is a cyclic number.

It is not a de Polignac number, because 5131848961 - 2¹ = 5131848959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5131848061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88480126 + ... + 88480183.

It is an arithmetic number, because the mean of its divisors is an integer number (1327202325).

Almost surely, 2^5131848961 is an apocalyptic number.

It is an amenable number.

5131848961 is a deficient number, since it is larger than the sum of its proper divisors (176960339).

5131848961 is a wasteful number, since it uses less digits than its factorization.

5131848961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176960338.

The product of its digits is 207360, while the sum is 46.

The square root of 5131848961 is about 71636.9245640822. The cubic root of 5131848961 is about 1724.8763012608.

The spelling of 5131848961 in words is "five billion, one hundred thirty-one million, eight hundred forty-eight thousand, nine hundred sixty-one".