7898182261 has 2 divisors, whose sum is σ = 7898182262. Its totient is φ = 7898182260.

The previous prime is 7898182241. The next prime is 7898182273. The reversal of 7898182261 is 1622818987.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7831188036 + 66994225 = 88494^2 + 8185^2 .

It is a cyclic number.

It is not a de Polignac number, because 7898182261 - 2⁹ = 7898181749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7898182199 and 7898182208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7898182241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3949091130 + 3949091131.

It is an arithmetic number, because the mean of its divisors is an integer number (3949091131).

Almost surely, 2^7898182261 is an apocalyptic number.

It is an amenable number.

7898182261 is a deficient number, since it is larger than the sum of its proper divisors (1).

7898182261 is an equidigital number, since it uses as much as digits as its factorization.

7898182261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 52.

The square root of 7898182261 is about 88871.7180040985. The cubic root of 7898182261 is about 1991.4789357068.

The spelling of 7898182261 in words is "seven billion, eight hundred ninety-eight million, one hundred eighty-two thousand, two hundred sixty-one".