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4645636381 is a prime number
BaseRepresentation
bin1000101001110011…
…01100100100011101
3102222202120210001201
410110321230210131
534003240331011
62044552035501
7223060154251
oct42471544435
912882523051
104645636381
111a74382411
12a97992b91
13590608489
14320dba261
151c2ca9cc1
hex114e6c91d

4645636381 has 2 divisors, whose sum is σ = 4645636382. Its totient is φ = 4645636380.

The previous prime is 4645636349. The next prime is 4645636403. The reversal of 4645636381 is 1836365464.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3050352900 + 1595283481 = 55230^2 + 39941^2 .

It is a cyclic number.

It is not a de Polignac number, because 4645636381 - 25 = 4645636349 is a prime.

It is a super-2 number, since 2×46456363812 = 43163874768941554322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4645636321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322818190 + 2322818191.

It is an arithmetic number, because the mean of its divisors is an integer number (2322818191).

Almost surely, 24645636381 is an apocalyptic number.

It is an amenable number.

4645636381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4645636381 is an equidigital number, since it uses as much as digits as its factorization.

4645636381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 46.

The square root of 4645636381 is about 68158.9053682642. The cubic root of 4645636381 is about 1668.5852673664.

The spelling of 4645636381 in words is "four billion, six hundred forty-five million, six hundred thirty-six thousand, three hundred eighty-one".