5131861181 has 8 divisors (see below), whose sum is σ = 5213051904. Its totient is φ = 5050805760.

The previous prime is 5131861169. The next prime is 5131861211. The reversal of 5131861181 is 1811681315.

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 not a de Polignac number, because 5131861181 - 2¹⁴ = 5131844797 is a prime.

It is a super-2 number, since 2×5131861181² = 52671998362109429522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131861151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44036 + ... + 110466.

It is an arithmetic number, because the mean of its divisors is an integer number (651631488).

Almost surely, 2^5131861181 is an apocalyptic number.

It is an amenable number.

5131861181 is a deficient number, since it is larger than the sum of its proper divisors (81190723).

5131861181 is a wasteful number, since it uses less digits than its factorization.

5131861181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67651.

The product of its digits is 5760, while the sum is 35.

The square root of 5131861181 is about 71637.0098552417. The cubic root of 5131861181 is about 1724.8776703561.

The spelling of 5131861181 in words is "five billion, one hundred thirty-one million, eight hundred sixty-one thousand, one hundred eighty-one".