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12918951419 = 111987591067
BaseRepresentation
bin11000000100000011…
…11000110111111011
31020100100021201201012
430002001320313323
5202424222421134
65533533544135
7635100163253
oct140201706773
936310251635
1012918951419
11552a458460
12260664504b
1312ab66526a
148a7aac963
155092926ce
hex302078dfb

12918951419 has 8 divisors (see below), whose sum is σ = 14100518208. Its totient is φ = 11738570760.

The previous prime is 12918951391. The next prime is 12918951431. The reversal of 12918951419 is 91415981921.

It is a happy number.

12918951419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12918951419 - 220 = 12917902843 is a prime.

It is a super-2 number, since 2×129189514192 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12918951469) 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 7 ways as a sum of consecutive naturals, for example, 273677 + ... + 317390.

It is an arithmetic number, because the mean of its divisors is an integer number (1762564776).

Almost surely, 212918951419 is an apocalyptic number.

12918951419 is a deficient number, since it is larger than the sum of its proper divisors (1181566789).

12918951419 is a wasteful number, since it uses less digits than its factorization.

12918951419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593065.

The product of its digits is 233280, while the sum is 50.

The spelling of 12918951419 in words is "twelve billion, nine hundred eighteen million, nine hundred fifty-one thousand, four hundred nineteen".

Divisors: 1 11 1987 21857 591067 6501737 1174450129 12918951419