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19123187082 = 233798409493
BaseRepresentation
bin10001110011110101…
…001010110110001010
31211100201122120001020
4101303311022312022
5303131013441312
612441324133310
71244614260006
oct216365126612
954321576036
1019123187082
1181235a454a
123858397236
131a59b3c21c
14cd5a83706
1576dcbe78c
hex473d4ad8a

19123187082 has 16 divisors (see below), whose sum is σ = 38347292640. Its totient is φ = 6357575952.

The previous prime is 19123187071. The next prime is 19123187099. The reversal of 19123187082 is 28078132191.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4202473 + ... + 4207020.

It is an arithmetic number, because the mean of its divisors is an integer number (2396705790).

Almost surely, 219123187082 is an apocalyptic number.

19123187082 is an abundant number, since it is smaller than the sum of its proper divisors (19224105558).

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

19123187082 is a wasteful number, since it uses less digits than its factorization.

19123187082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8409877.

The product of its (nonzero) digits is 48384, while the sum is 42.

The spelling of 19123187082 in words is "nineteen billion, one hundred twenty-three million, one hundred eighty-seven thousand, eighty-two".

Divisors: 1 2 3 6 379 758 1137 2274 8409493 16818986 25228479 50456958 3187197847 6374395694 9561593541 19123187082