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18428741007 = 3231559171317
BaseRepresentation
bin10001001010011100…
…000100010110001111
31202120022221001010020
4101022130010112033
5300220224203012
612244355513223
71221452466615
oct211234042617
952508831106
1018428741007
1178a75a8976
1236a38b8813
131978cc5aa1
14c6b7536b5
1572cd47a8c
hex44a70458f

18428741007 has 16 divisors (see below), whose sum is σ = 25656583680. Its totient is φ = 11744054432.

The previous prime is 18428740991. The next prime is 18428741077. The reversal of 18428741007 is 70014782481.

It is a cyclic number.

It is not a de Polignac number, because 18428741007 - 24 = 18428740991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18428741007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18428741077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21913 + ... + 193229.

It is an arithmetic number, because the mean of its divisors is an integer number (1603536480).

Almost surely, 218428741007 is an apocalyptic number.

18428741007 is a deficient number, since it is larger than the sum of its proper divisors (7227842673).

18428741007 is a wasteful number, since it uses less digits than its factorization.

18428741007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172902.

The product of its (nonzero) digits is 100352, while the sum is 42.

The spelling of 18428741007 in words is "eighteen billion, four hundred twenty-eight million, seven hundred forty-one thousand, seven".

Divisors: 1 3 23 69 1559 4677 35857 107571 171317 513951 3940291 11820873 267083203 801249609 6142913669 18428741007