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13901950281 = 324119228147
BaseRepresentation
bin11001111001001111…
…01110110101001001
31022212211222020122110
430330213232311021
5211432344402111
610215251012533
71001334425202
oct147447566511
938784866573
1013901950281
11599431a00a
12283b89a149
1314071cbcab
1495c4725a9
155657165a6
hex33c9eed49

13901950281 has 8 divisors (see below), whose sum is σ = 18612847264. Its totient is φ = 9229510080.

The previous prime is 13901950253. The next prime is 13901950303. The reversal of 13901950281 is 18205910931.

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

It is not a de Polignac number, because 13901950281 - 29 = 13901949769 is a prime.

It is a super-2 number, since 2×139019502812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13901950211) 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, 9613351 + ... + 9614796.

It is an arithmetic number, because the mean of its divisors is an integer number (2326605908).

Almost surely, 213901950281 is an apocalyptic number.

It is an amenable number.

13901950281 is a deficient number, since it is larger than the sum of its proper divisors (4710896983).

13901950281 is a wasteful number, since it uses less digits than its factorization.

13901950281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19228391.

The product of its (nonzero) digits is 19440, while the sum is 39.

The spelling of 13901950281 in words is "thirteen billion, nine hundred one million, nine hundred fifty thousand, two hundred eighty-one".

Divisors: 1 3 241 723 19228147 57684441 4633983427 13901950281