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18286078874 = 271306148491
BaseRepresentation
bin10001000001111011…
…110110101110011010
31202012101111001110112
4101001323312232122
5244422214010444
612222302044322
71215101051210
oct210173665632
952171431415
1018286078874
117834018788
123663b796a2
131955595b1b
14c56818cb0
1572056769e
hex441ef6b9a

18286078874 has 8 divisors (see below), whose sum is σ = 31347563808. Its totient is φ = 7836890940.

The previous prime is 18286078873. The next prime is 18286078901. The reversal of 18286078874 is 47887068281.

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

It is a super-2 number, since 2×182860788742 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18286078873) 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 3 ways as a sum of consecutive naturals, for example, 653074232 + ... + 653074259.

It is an arithmetic number, because the mean of its divisors is an integer number (3918445476).

Almost surely, 218286078874 is an apocalyptic number.

18286078874 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18286078874 is a deficient number, since it is larger than the sum of its proper divisors (13061484934).

18286078874 is a wasteful number, since it uses less digits than its factorization.

18286078874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306148500.

The product of its (nonzero) digits is 9633792, while the sum is 59.

The spelling of 18286078874 in words is "eighteen billion, two hundred eighty-six million, seventy-eight thousand, eight hundred seventy-four".

Divisors: 1 2 7 14 1306148491 2612296982 9143039437 18286078874