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18280441974 = 233046740329
BaseRepresentation
bin10001000001100110…
…010110100001110110
31202011222212200002110
4101001212112201312
5244414243120344
612221541151450
71215002123124
oct210146264166
952158780073
1018280441974
117830918693
1236620bb586
131954371192
14c55b8c914
1571ed023b9
hex441996876

18280441974 has 8 divisors (see below), whose sum is σ = 36560883960. Its totient is φ = 6093480656.

The previous prime is 18280441967. The next prime is 18280441979. The reversal of 18280441974 is 47914408281.

It is a sphenic number, since it is the product of 3 distinct primes.

18280441974 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18280441979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1523370159 + ... + 1523370170.

It is an arithmetic number, because the mean of its divisors is an integer number (4570110495).

Almost surely, 218280441974 is an apocalyptic number.

18280441974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18280441974 is a wasteful number, since it uses less digits than its factorization.

18280441974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046740334.

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 18280441974 in words is "eighteen billion, two hundred eighty million, four hundred forty-one thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 3046740329 6093480658 9140220987 18280441974