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2438679481 = 7249768969
BaseRepresentation
bin1001000101011011…
…0100101110111001
320021221210202100021
42101112310232321
514443300220411
61041553210441
7114301301500
oct22126645671
96257722307
102438679481
111041630a97
12580860a21
132cb30c414
14191c4b837
15e4166a71
hex915b4bb9

2438679481 has 6 divisors (see below), whose sum is σ = 2836831290. Its totient is φ = 2090296656.

The previous prime is 2438679473. The next prime is 2438679491. The reversal of 2438679481 is 1849768342.

It can be written as a sum of positive squares in only one way, i.e., 1717273600 + 721405881 = 41440^2 + 26859^2 .

It is not a de Polignac number, because 2438679481 - 23 = 2438679473 is a prime.

It is a super-2 number, since 2×24386794812 = 11894315222100858722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2438679421) 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 in 5 ways as a sum of consecutive naturals, for example, 24884436 + ... + 24884533.

It is an arithmetic number, because the mean of its divisors is an integer number (472805215).

Almost surely, 22438679481 is an apocalyptic number.

It is an amenable number.

2438679481 is a deficient number, since it is larger than the sum of its proper divisors (398151809).

2438679481 is an equidigital number, since it uses as much as digits as its factorization.

2438679481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49768983 (or 49768976 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 2438679481 is about 49382.9877690688. The cubic root of 2438679481 is about 1346.0201914196.

The spelling of 2438679481 in words is "two billion, four hundred thirty-eight million, six hundred seventy-nine thousand, four hundred eighty-one".

Divisors: 1 7 49 49768969 348382783 2438679481