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18863443143029 = 471016813947147
BaseRepresentation
bin1000100100111111111001…
…10100111110100101110101
32110210022211210012222201102
410102133330310332211311
54433024312421034104
6104041425100135445
73654560464106252
oct422377464764565
973708753188642
1018863443143029
116012a39981361
122147a40b37585
13a6aa798a6364
14492dd19c4429
1522aa34d28a1e
hex1127fcd3e975

18863443143029 has 8 divisors (see below), whose sum is σ = 19264987340928. Its totient is φ = 18461907042880.

The previous prime is 18863443143023. The next prime is 18863443143031. The reversal of 18863443143029 is 92034134436881.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18863443143029 - 232 = 18859148175733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18863443143023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2805434 + ... + 6752580.

It is an arithmetic number, because the mean of its divisors is an integer number (2408123417616).

Almost surely, 218863443143029 is an apocalyptic number.

It is an amenable number.

18863443143029 is a deficient number, since it is larger than the sum of its proper divisors (401544197899).

18863443143029 is a wasteful number, since it uses less digits than its factorization.

18863443143029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048875.

The product of its (nonzero) digits is 11943936, while the sum is 56.

The spelling of 18863443143029 in words is "eighteen trillion, eight hundred sixty-three billion, four hundred forty-three million, one hundred forty-three thousand, twenty-nine".

Divisors: 1 47 101681 3947147 4779007 185515909 401349854107 18863443143029