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18386070623 = 109445137897
BaseRepresentation
bin10001000111111001…
…010010110001011111
31202110100122011100122
4101013321102301133
5300123313224443
612240233145155
71220424010304
oct210771226137
952410564318
1018386070623
117885503a98
12369155b1bb
13197020593b
14c65c070ab
15729219968
hex447e52c5f

18386070623 has 8 divisors (see below), whose sum is σ = 18559408560. Its totient is φ = 18212817600.

The previous prime is 18386070587. The next prime is 18386070649. The reversal of 18386070623 is 32607068381.

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 18386070623 - 26 = 18386070559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18386070683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466211 + ... + 504107.

It is an arithmetic number, because the mean of its divisors is an integer number (2319926070).

Almost surely, 218386070623 is an apocalyptic number.

18386070623 is a deficient number, since it is larger than the sum of its proper divisors (173337937).

18386070623 is a wasteful number, since it uses less digits than its factorization.

18386070623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42457.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 18386070623 in words is "eighteen billion, three hundred eighty-six million, seventy thousand, six hundred twenty-three".

Divisors: 1 109 4451 37897 485159 4130773 168679547 18386070623