Search a number
-
+
4974258781 is a prime number
BaseRepresentation
bin1001010000111110…
…10010101001011101
3110211122221112020201
410220133102221131
540141402240111
62141331343501
7234160334122
oct45037225135
913748845221
104974258781
112122926278
12b69a51b91
136137181bb
143528c0749
151e1a6e6c1
hex1287d2a5d

4974258781 has 2 divisors, whose sum is σ = 4974258782. Its totient is φ = 4974258780.

The previous prime is 4974258697. The next prime is 4974258811. The reversal of 4974258781 is 1878524794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4210841881 + 763416900 = 64891^2 + 27630^2 .

It is a cyclic number.

It is not a de Polignac number, because 4974258781 - 29 = 4974258269 is a prime.

It is a super-2 number, since 2×49742587812 = 49486500840711211922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4974259781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2487129390 + 2487129391.

It is an arithmetic number, because the mean of its divisors is an integer number (2487129391).

Almost surely, 24974258781 is an apocalyptic number.

It is an amenable number.

4974258781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4974258781 is an equidigital number, since it uses as much as digits as its factorization.

4974258781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4515840, while the sum is 55.

The square root of 4974258781 is about 70528.4253404257. The cubic root of 4974258781 is about 1707.0364387677.

The spelling of 4974258781 in words is "four billion, nine hundred seventy-four million, two hundred fifty-eight thousand, seven hundred eighty-one".