Search a number
-
+
4804931581 is a prime number
BaseRepresentation
bin1000111100110010…
…10110111111111101
3110101212022210222221
410132121112333331
534320030302311
62112442205341
7230033146612
oct43631267775
913355283887
104804931581
11204629323a
12b211b3851
135b76101a8
14338204509
151d1c73671
hex11e656ffd

4804931581 has 2 divisors, whose sum is σ = 4804931582. Its totient is φ = 4804931580.

The previous prime is 4804931557. The next prime is 4804931597. The reversal of 4804931581 is 1851394084.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4796809081 + 8122500 = 69259^2 + 2850^2 .

It is a cyclic number.

It is not a de Polignac number, because 4804931581 - 229 = 4268060669 is a prime.

It is a super-2 number, since 2×48049315812 = 46174734996182319122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4804931981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2402465790 + 2402465791.

It is an arithmetic number, because the mean of its divisors is an integer number (2402465791).

Almost surely, 24804931581 is an apocalyptic number.

It is an amenable number.

4804931581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4804931581 is an equidigital number, since it uses as much as digits as its factorization.

4804931581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 4804931581 is about 69317.6137861078. The cubic root of 4804931581 is about 1687.4428351628.

The spelling of 4804931581 in words is "four billion, eight hundred four million, nine hundred thirty-one thousand, five hundred eighty-one".