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13894079157 = 3271144319273
BaseRepresentation
bin11001111000010011…
…01101001010110101
31022212022011100111100
430330021231022311
5211423341013112
610214410200313
71001210503260
oct147411551265
938768140440
1013894079157
11598a933352
122839123099
1314056a441a
1495b3c3cd7
15564bae2dc
hex33c26d2b5

13894079157 has 24 divisors (see below), whose sum is σ = 22939452224. Its totient is φ = 7938368064.

The previous prime is 13894079081. The next prime is 13894079159. The reversal of 13894079157 is 75197049831.

It is a happy number.

13894079157 is a `hidden beast` number, since 1 + 3 + 89 + 407 + 9 + 157 = 666.

It is not a de Polignac number, because 13894079157 - 224 = 13877301941 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 (13894079159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 711273 + ... + 730545.

Almost surely, 213894079157 is an apocalyptic number.

It is an amenable number.

13894079157 is a deficient number, since it is larger than the sum of its proper divisors (9045373067).

13894079157 is a wasteful number, since it uses less digits than its factorization.

13894079157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30729 (or 30726 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 54.

The spelling of 13894079157 in words is "thirteen billion, eight hundred ninety-four million, seventy-nine thousand, one hundred fifty-seven".

Divisors: 1 3 7 9 21 63 11443 19273 34329 57819 80101 102987 134911 173457 240303 404733 720909 1214199 220540939 661622817 1543786573 1984868451 4631359719 13894079157