4890187261 has 2 divisors, whose sum is σ = 4890187262. Its totient is φ = 4890187260.

The previous prime is 4890187243. The next prime is 4890187283. The reversal of 4890187261 is 1627810984.

4890187261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2728495225 + 2161692036 = 52235^2 + 46494^2 .

It is a cyclic number.

It is not a de Polignac number, because 4890187261 - 2²³ = 4881798653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4890187961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2445093630 + 2445093631.

It is an arithmetic number, because the mean of its divisors is an integer number (2445093631).

Almost surely, 2^4890187261 is an apocalyptic number.

It is an amenable number.

4890187261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4890187261 is an equidigital number, since it uses as much as digits as its factorization.

4890187261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 4890187261 is about 69929.8738809102. The cubic root of 4890187261 is about 1697.3646897943.

The spelling of 4890187261 in words is "four billion, eight hundred ninety million, one hundred eighty-seven thousand, two hundred sixty-one".