Search a number
-
+
18013142658 = 2373113834979
BaseRepresentation
bin10000110001101010…
…101011111010000010
31201111100220110100210
4100301222223322002
5243342331031113
612135232054550
71205245120620
oct206152537202
951440813323
1018013142658
117703a49765
1235a8694456
131910b826c4
14c2c48c510
157066026c3
hex431aabe82

18013142658 has 32 divisors (see below), whose sum is σ = 42501058560. Its totient is φ = 4980592080.

The previous prime is 18013142639. The next prime is 18013142669. The reversal of 18013142658 is 85624131081.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6916188 + ... + 6918791.

It is an arithmetic number, because the mean of its divisors is an integer number (1328158080).

Almost surely, 218013142658 is an apocalyptic number.

18013142658 is an abundant number, since it is smaller than the sum of its proper divisors (24487915902).

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

18013142658 is a wasteful number, since it uses less digits than its factorization.

18013142658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13835022.

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 18013142658 in words is "eighteen billion, thirteen million, one hundred forty-two thousand, six hundred fifty-eight".

Divisors: 1 2 3 6 7 14 21 31 42 62 93 186 217 434 651 1302 13834979 27669958 41504937 83009874 96844853 193689706 290534559 428884349 581069118 857768698 1286653047 2573306094 3002190443 6004380886 9006571329 18013142658