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1208468681 = 71710155199
BaseRepresentation
bin100100000000111…
…1100010011001001
310010012221120101022
41020001330103021
54433331444211
6315525402225
741642546210
oct11001742311
93105846338
101208468681
11570170452
12298869375
1316349b034
14b66d6077
157115ebdb
hex4807c4c9

1208468681 has 8 divisors (see below), whose sum is σ = 1462348800. Its totient is φ = 974899008.

The previous prime is 1208468671. The next prime is 1208468699. The reversal of 1208468681 is 1868648021.

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 1208468681 - 26 = 1208468617 is a prime.

It is a super-2 number, since 2×12084686812 = 2920793105915759522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1208468671) 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, 5077481 + ... + 5077718.

It is an arithmetic number, because the mean of its divisors is an integer number (182793600).

Almost surely, 21208468681 is an apocalyptic number.

It is an amenable number.

1208468681 is a deficient number, since it is larger than the sum of its proper divisors (253880119).

1208468681 is a wasteful number, since it uses less digits than its factorization.

1208468681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10155223.

The product of its (nonzero) digits is 147456, while the sum is 44.

The square root of 1208468681 is about 34763.0361303497. The cubic root of 1208468681 is about 1065.1525216695.

The spelling of 1208468681 in words is "one billion, two hundred eight million, four hundred sixty-eight thousand, six hundred eighty-one".

Divisors: 1 7 17 119 10155199 71086393 172638383 1208468681