3129151813 has 2 divisors, whose sum is σ = 3129151814. Its totient is φ = 3129151812.

The previous prime is 3129151793. The next prime is 3129151847. The reversal of 3129151813 is 3181519213.

It is an a-pointer prime, because the next prime (3129151847) can be obtained adding 3129151813 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2636000964 + 493150849 = 51342^2 + 22207^2 .

It is a cyclic number.

It is not a de Polignac number, because 3129151813 - 2¹³ = 3129143621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3129151213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564575906 + 1564575907.

It is an arithmetic number, because the mean of its divisors is an integer number (1564575907).

Almost surely, 2^3129151813 is an apocalyptic number.

It is an amenable number.

3129151813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3129151813 is an equidigital number, since it uses as much as digits as its factorization.

3129151813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 34.

The square root of 3129151813 is about 55938.8220558853. The cubic root of 3129151813 is about 1462.6560479071.

The spelling of 3129151813 in words is "three billion, one hundred twenty-nine million, one hundred fifty-one thousand, eight hundred thirteen".