2086357261 has 2 divisors, whose sum is σ = 2086357262. Its totient is φ = 2086357260.

The previous prime is 2086357211. The next prime is 2086357267. The reversal of 2086357261 is 1627536802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1934328361 + 152028900 = 43981^2 + 12330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2086357261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2086357267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043178630 + 1043178631.

It is an arithmetic number, because the mean of its divisors is an integer number (1043178631).

Almost surely, 2^2086357261 is an apocalyptic number.

It is an amenable number.

2086357261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2086357261 is an equidigital number, since it uses as much as digits as its factorization.

2086357261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 2086357261 is about 45676.6599151032. The cubic root of 2086357261 is about 1277.8000257329.

The spelling of 2086357261 in words is "two billion, eighty-six million, three hundred fifty-seven thousand, two hundred sixty-one".