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38147086898 = 21381072
BaseRepresentation
bin100011100001101111…
…100101101000110010
310122110112110210120022
4203201233211220302
51111111123240043
625305144243442
72520214613534
oct434157455062
9118415423508
1038147086898
11151a6043aa8
127487470582
13379c22718b
141bbc47d854
15ed3eca868
hex8e1be5a32

38147086898 has 6 divisors (see below), whose sum is σ = 57221044671. Its totient is φ = 19073405342.

The previous prime is 38147086897. The next prime is 38147086903. The reversal of 38147086898 is 89868074183.

38147086898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 19073543449 + 19073543449 = 138107^2 + 138107^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=138107.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38147086898.

It is not an unprimeable number, because it can be changed into a prime (38147086897) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 207161 + ... + 345267.

Almost surely, 238147086898 is an apocalyptic number.

38147086898 is a deficient number, since it is larger than the sum of its proper divisors (19073957773).

38147086898 is an frugal number, since it uses more digits than its factorization.

38147086898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276216 (or 138109 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 62.

The spelling of 38147086898 in words is "thirty-eight billion, one hundred forty-seven million, eighty-six thousand, eight hundred ninety-eight".

Divisors: 1 2 138107 276214 19073543449 38147086898