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8638638059 = 192915678109
BaseRepresentation
bin10000000101110011…
…10010011111101011
3211022001010021121202
420002321302133223
5120142442404214
63545111554415
7424034132462
oct100271623753
924261107552
108638638059
1137333166a7
12181108ba0b
13a7894966c
145bd42b9d9
153585eb6de
hex202e727eb

8638638059 has 8 divisors (see below), whose sum is σ = 9406866000. Its totient is φ = 7901766432.

The previous prime is 8638638053. The next prime is 8638638067. The reversal of 8638638059 is 9508368368.

8638638059 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8638638059 - 224 = 8621860843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8638637995 and 8638638013.

It is not an unprimeable number, because it can be changed into a prime (8638638053) 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, 7838504 + ... + 7839605.

It is an arithmetic number, because the mean of its divisors is an integer number (1175858250).

Almost surely, 28638638059 is an apocalyptic number.

8638638059 is a deficient number, since it is larger than the sum of its proper divisors (768227941).

8638638059 is a wasteful number, since it uses less digits than its factorization.

8638638059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15678157.

The product of its (nonzero) digits is 7464960, while the sum is 56.

The square root of 8638638059 is about 92944.2739441220. The cubic root of 8638638059 is about 2051.8633115338.

The spelling of 8638638059 in words is "eight billion, six hundred thirty-eight million, six hundred thirty-eight thousand, fifty-nine".

Divisors: 1 19 29 551 15678109 297884071 454665161 8638638059