4681622261 has 2 divisors, whose sum is σ = 4681622262. Its totient is φ = 4681622260.

The previous prime is 4681622251. The next prime is 4681622273. The reversal of 4681622261 is 1622261864.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3120898225 + 1560724036 = 55865^2 + 39506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4681622261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4681622251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2340811130 + 2340811131.

It is an arithmetic number, because the mean of its divisors is an integer number (2340811131).

Almost surely, 2^4681622261 is an apocalyptic number.

It is an amenable number.

4681622261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4681622261 is an equidigital number, since it uses as much as digits as its factorization.

4681622261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 38.

The square root of 4681622261 is about 68422.3812871198. The cubic root of 4681622261 is about 1672.8825711301.

The spelling of 4681622261 in words is "four billion, six hundred eighty-one million, six hundred twenty-two thousand, two hundred sixty-one".