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18996514726 = 272971998371
BaseRepresentation
bin10001101100010001…
…111100111110100110
31211000220021221020111
4101230101330332212
5302401101432401
612421001123234
71241515465600
oct215421747646
954026257214
1018996514726
118069045752
123821a8951a
131a3981a277
14cc2d0c170
15762aebe51
hex46c47cfa6

18996514726 has 24 divisors (see below), whose sum is σ = 33488717976. Its totient is φ = 8057427840.

The previous prime is 18996514721. The next prime is 18996514741. The reversal of 18996514726 is 62741569981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18996514721) 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 11 ways as a sum of consecutive naturals, for example, 989680 + ... + 1008691.

It is an arithmetic number, because the mean of its divisors is an integer number (1395363249).

Almost surely, 218996514726 is an apocalyptic number.

18996514726 is a deficient number, since it is larger than the sum of its proper divisors (14492203250).

18996514726 is a wasteful number, since it uses less digits than its factorization.

18996514726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998484 (or 1998477 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 58.

The spelling of 18996514726 in words is "eighteen billion, nine hundred ninety-six million, five hundred fourteen thousand, seven hundred twenty-six".

Divisors: 1 2 7 14 49 97 98 194 679 1358 4753 9506 1998371 3996742 13988597 27977194 97920179 193841987 195840358 387683974 1356893909 2713787818 9498257363 18996514726