2851381517 has 2 divisors, whose sum is σ = 2851381518. Its totient is φ = 2851381516.

The previous prime is 2851381459. The next prime is 2851381541. The reversal of 2851381517 is 7151831582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2431377481 + 420004036 = 49309^2 + 20494^2 .

It is a cyclic number.

It is not a de Polignac number, because 2851381517 - 2¹² = 2851377421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2851371517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425690758 + 1425690759.

It is an arithmetic number, because the mean of its divisors is an integer number (1425690759).

Almost surely, 2^2851381517 is an apocalyptic number.

It is an amenable number.

2851381517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2851381517 is an equidigital number, since it uses as much as digits as its factorization.

2851381517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 41.

The square root of 2851381517 is about 53398.3287847101. The cubic root of 2851381517 is about 1418.0289914519.

The spelling of 2851381517 in words is "two billion, eight hundred fifty-one million, three hundred eighty-one thousand, five hundred seventeen".