2851942517 has 2 divisors, whose sum is σ = 2851942518. Its totient is φ = 2851942516.

The previous prime is 2851942501. The next prime is 2851942543. The reversal of 2851942517 is 7152491582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2626972516 + 224970001 = 51254^2 + 14999^2 .

It is a cyclic number.

It is not a de Polignac number, because 2851942517 - 2⁴ = 2851942501 is a prime.

It is a super-2 number, since 2×2851942517² = 16267152240544590578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2851942547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425971258 + 1425971259.

It is an arithmetic number, because the mean of its divisors is an integer number (1425971259).

Almost surely, 2^2851942517 is an apocalyptic number.

It is an amenable number.

2851942517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2851942517 is an equidigital number, since it uses as much as digits as its factorization.

2851942517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 44.

The square root of 2851942517 is about 53403.5814997459. The cubic root of 2851942517 is about 1418.1219828777.

The spelling of 2851942517 in words is "two billion, eight hundred fifty-one million, nine hundred forty-two thousand, five hundred seventeen".