2051610917 has 2 divisors, whose sum is σ = 2051610918. Its totient is φ = 2051610916.

The previous prime is 2051610893. The next prime is 2051610919. The reversal of 2051610917 is 7190161502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1220384356 + 831226561 = 34934^2 + 28831^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051610917 - 2⁸ = 2051610661 is a prime.

Together with 2051610919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051610919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025805458 + 1025805459.

It is an arithmetic number, because the mean of its divisors is an integer number (1025805459).

Almost surely, 2^2051610917 is an apocalyptic number.

It is an amenable number.

2051610917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051610917 is an equidigital number, since it uses as much as digits as its factorization.

2051610917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 2051610917 is about 45294.7117995026. The cubic root of 2051610917 is about 1270.6667540716. Note that the first 3 decimals are identical.

The spelling of 2051610917 in words is "two billion, fifty-one million, six hundred ten thousand, nine hundred seventeen".