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18434351001 = 311558616697
BaseRepresentation
bin10001001010110001…
…011101111110011001
31202120201111001120210
4101022301131332121
5300223143213001
612245120041333
71221551253363
oct211261357631
952521431523
1018434351001
1178aa78a830
1236a5763249
13197a20b401
14c6c3b3d33
1572d5a4dd6
hex44ac5df99

18434351001 has 8 divisors (see below), whose sum is σ = 26813601504. Its totient is φ = 11172333920.

The previous prime is 18434350969. The next prime is 18434351009. The reversal of 18434351001 is 10015343481.

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

It is not a de Polignac number, because 18434351001 - 25 = 18434350969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18434351001.

It is not an unprimeable number, because it can be changed into a prime (18434351009) 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, 279308316 + ... + 279308381.

It is an arithmetic number, because the mean of its divisors is an integer number (3351700188).

Almost surely, 218434351001 is an apocalyptic number.

18434351001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18434351001 is a deficient number, since it is larger than the sum of its proper divisors (8379250503).

18434351001 is a wasteful number, since it uses less digits than its factorization.

18434351001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558616711.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 18434351001 its reverse (10015343481), we get a palindrome (28449694482).

The spelling of 18434351001 in words is "eighteen billion, four hundred thirty-four million, three hundred fifty-one thousand, one".

Divisors: 1 3 11 33 558616697 1675850091 6144783667 18434351001