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6379638069 = 37303792289
BaseRepresentation
bin1011111000100000…
…11000110100110101
3121110121102012012110
411330100120310311
5101031141404234
62533013441233
7314044012620
oct57420306465
917417365173
106379638069
112784159562
1212a0640219
137a892b28c
144473d2db7
152751281e9
hex17c418d35

6379638069 has 8 divisors (see below), whose sum is σ = 9721353280. Its totient is φ = 3645507456.

The previous prime is 6379638029. The next prime is 6379638073. The reversal of 6379638069 is 9608369736.

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

It is not a de Polignac number, because 6379638069 - 27 = 6379637941 is a prime.

It is a super-2 number, since 2×63796380692 = 81399563782868097522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6379638019) 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, 151896124 + ... + 151896165.

It is an arithmetic number, because the mean of its divisors is an integer number (1215169160).

Almost surely, 26379638069 is an apocalyptic number.

It is an amenable number.

6379638069 is a deficient number, since it is larger than the sum of its proper divisors (3341715211).

6379638069 is a wasteful number, since it uses less digits than its factorization.

6379638069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303792299.

The product of its (nonzero) digits is 8817984, while the sum is 57.

The square root of 6379638069 is about 79872.6365471931. The cubic root of 6379638069 is about 1854.6644476035.

The spelling of 6379638069 in words is "six billion, three hundred seventy-nine million, six hundred thirty-eight thousand, sixty-nine".

Divisors: 1 3 7 21 303792289 911376867 2126546023 6379638069