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18885302101 = 91499206399
BaseRepresentation
bin10001100101101001…
…101101011101010101
31210202011000202012101
4101211221231131111
5302134114131401
612401545322101
71235665263541
oct214551553525
953664022171
1018885302101
118011295a96
1237b0796331
131a1c77bc93
14cb223ca21
15757e80101
hex465a6d755

18885302101 has 4 divisors (see below), whose sum is σ = 18885600000. Its totient is φ = 18885004204.

The previous prime is 18885302069. The next prime is 18885302113. The reversal of 18885302101 is 10120358881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18885302101 - 25 = 18885302069 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 (18885302131) 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 3 ways as a sum of consecutive naturals, for example, 11701 + ... + 194698.

It is an arithmetic number, because the mean of its divisors is an integer number (4721400000).

Almost surely, 218885302101 is an apocalyptic number.

It is an amenable number.

18885302101 is a deficient number, since it is larger than the sum of its proper divisors (297899).

18885302101 is an equidigital number, since it uses as much as digits as its factorization.

18885302101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297898.

The product of its (nonzero) digits is 15360, while the sum is 37.

The spelling of 18885302101 in words is "eighteen billion, eight hundred eighty-five million, three hundred two thousand, one hundred one".

Divisors: 1 91499 206399 18885302101