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5185424831 = 7965638289
BaseRepresentation
bin1001101010001001…
…10100110110111111
3111101101021212121112
410311010310312333
541104432043311
62214313352235
7242333245436
oct46504646677
914341255545
105185424831
112221045474
12100870867b
136483b1a22
1437296c11d
1520538228b
hex135134dbf

5185424831 has 4 divisors (see below), whose sum is σ = 5251063200. Its totient is φ = 5119786464.

The previous prime is 5185424821. The next prime is 5185424833. The reversal of 5185424831 is 1384245815.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1384245815 = 5276849163.

It is a cyclic number.

It is not a de Polignac number, because 5185424831 - 226 = 5118315967 is a prime.

It is a super-2 number, since 2×51854248312 = 53777261355902757122, 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 (5185424833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32819066 + ... + 32819223.

It is an arithmetic number, because the mean of its divisors is an integer number (1312765800).

Almost surely, 25185424831 is an apocalyptic number.

5185424831 is a deficient number, since it is larger than the sum of its proper divisors (65638369).

5185424831 is an equidigital number, since it uses as much as digits as its factorization.

5185424831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65638368.

The product of its digits is 153600, while the sum is 41.

The square root of 5185424831 is about 72009.8939799247. The cubic root of 5185424831 is about 1730.8580317189.

The spelling of 5185424831 in words is "five billion, one hundred eighty-five million, four hundred twenty-four thousand, eight hundred thirty-one".

Divisors: 1 79 65638289 5185424831