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19158435396 = 2232172232592
BaseRepresentation
bin10001110101111011…
…101000011001000100
31211110011222100122100
4101311323220121010
5303214024413041
612445023432100
71245523004532
oct216573503104
954404870570
1019158435396
11814148a091
123868155630
131a64231009
14cda61b152
15771e336b6
hex475ee8644

19158435396 has 243 divisors, whose sum is σ = 54705479101. Its totient is φ = 5651720448.

The previous prime is 19158435383. The next prime is 19158435397. The reversal of 19158435396 is 69353485191.

The square root of 19158435396 is 138414.

It is a perfect power (a square), and thus also a powerful number.

19158435396 is a `hidden beast` number, since 1 + 9 + 1 + 584 + 3 + 53 + 9 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14915736900 + 4242698496 = 122130^2 + 65136^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19158435397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 324719215 + ... + 324719273.

Almost surely, 219158435396 is an apocalyptic number.

19158435396 is the 138414-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19158435396

19158435396 is an abundant number, since it is smaller than the sum of its proper divisors (35547043705).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19158435396 is a wasteful number, since it uses less digits than its factorization.

19158435396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 104 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 19158435396 in words is "nineteen billion, one hundred fifty-eight million, four hundred thirty-five thousand, three hundred ninety-six".