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19299115968 = 26311312811049
BaseRepresentation
bin10001111110010100…
…010010001111000000
31211210222200200002220
4101332110102033000
5304011033202333
612511011011040
71252151531136
oct217624221700
954728620086
1019299115968
118203936520
1238a7299a80
131a87419062
14d1119b756
1577e4718b3
hex47e5123c0

19299115968 has 224 divisors, whose sum is σ = 57760819200. Its totient is φ = 5634048000.

The previous prime is 19299115951. The next prime is 19299115991. The reversal of 19299115968 is 86951199291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18397108 + ... + 18398156.

It is an arithmetic number, because the mean of its divisors is an integer number (257860800).

Almost surely, 219299115968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19299115968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28880409600).

19299115968 is an abundant number, since it is smaller than the sum of its proper divisors (38461703232).

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

19299115968 is a wasteful number, since it uses less digits than its factorization.

19299115968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387 (or 1377 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 60.

It can be divided in two parts, 192 and 99115968, that added together give a triangular number (99116160 = T14079).

The spelling of 19299115968 in words is "nineteen billion, two hundred ninety-nine million, one hundred fifteen thousand, nine hundred sixty-eight".