5131359749 has 4 divisors (see below), whose sum is σ = 5240537664. Its totient is φ = 5022181836.

The previous prime is 5131359733. The next prime is 5131359767. The reversal of 5131359749 is 9479531315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9479531315 = 5 ⋅1895906263.

It is a cyclic number.

It is not a de Polignac number, because 5131359749 - 2⁴ = 5131359733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 109177867 = 5131359749 / (5 + 1 + 3 + 1 + 3 + 5 + 9 + 7 + 4 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131359349) 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, 54588887 + ... + 54588980.

It is an arithmetic number, because the mean of its divisors is an integer number (1310134416).

Almost surely, 2^5131359749 is an apocalyptic number.

It is an amenable number.

5131359749 is a deficient number, since it is larger than the sum of its proper divisors (109177915).

5131359749 is a wasteful number, since it uses less digits than its factorization.

5131359749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109177914.

The product of its digits is 510300, while the sum is 47.

The square root of 5131359749 is about 71633.5099586779. The cubic root of 5131359749 is about 1724.8214895021.

The spelling of 5131359749 in words is "five billion, one hundred thirty-one million, three hundred fifty-nine thousand, seven hundred forty-nine".