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18412829898 = 234217289323
BaseRepresentation
bin10001001001011111…
…010111110011001010
31202112012222200011220
4101021133113303022
5300202141024043
612243030502510
71221200320551
oct211137276312
952465880156
1018412829898
1178996206a1
12369a504a36
131975914828
14c695b0d98
1572b753483
hex4497d7cca

18412829898 has 16 divisors (see below), whose sum is σ = 36913136736. Its totient is φ = 6123030480.

The previous prime is 18412829891. The next prime is 18412829899. The reversal of 18412829898 is 89892821481.

It is not an unprimeable number, because it can be changed into a prime (18412829891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3642136 + ... + 3647187.

It is an arithmetic number, because the mean of its divisors is an integer number (2307071046).

Almost surely, 218412829898 is an apocalyptic number.

18412829898 is an abundant number, since it is smaller than the sum of its proper divisors (18500306838).

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

18412829898 is a wasteful number, since it uses less digits than its factorization.

18412829898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7289749.

The product of its digits is 5308416, while the sum is 60.

The spelling of 18412829898 in words is "eighteen billion, four hundred twelve million, eight hundred twenty-nine thousand, eight hundred ninety-eight".

Divisors: 1 2 3 6 421 842 1263 2526 7289323 14578646 21867969 43735938 3068804983 6137609966 9206414949 18412829898