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13401430018 = 2191321726683
BaseRepresentation
bin11000111101100100…
…11001100000000010
31021120222011011220221
430132302121200002
5204421231230033
610053451053254
7653046163354
oct143662314002
937528134827
1013401430018
1157578377a9
12272014122a
1313575c4162
14911bc30d4
155367e912d
hex31ec99802

13401430018 has 16 divisors (see below), whose sum is σ = 21162546720. Its totient is φ = 6347327616.

The previous prime is 13401429883. The next prime is 13401430019. The reversal of 13401430018 is 81003410431.

It is a junction number, because it is equal to n+sod(n) for n = 13401429974 and 13401430001.

It is not an unprimeable number, because it can be changed into a prime (13401430019) 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, 488905 + ... + 515587.

It is an arithmetic number, because the mean of its divisors is an integer number (1322659170).

Almost surely, 213401430018 is an apocalyptic number.

13401430018 is a deficient number, since it is larger than the sum of its proper divisors (7761116702).

13401430018 is a wasteful number, since it uses less digits than its factorization.

13401430018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39921.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 13401430018 its reverse (81003410431), we get a palindrome (94404840449).

The spelling of 13401430018 in words is "thirteen billion, four hundred one million, four hundred thirty thousand, eighteen".

Divisors: 1 2 19 38 13217 26434 26683 53366 251123 502246 506977 1013954 352669211 705338422 6700715009 13401430018