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18297919286 = 229315481367
BaseRepresentation
bin10001000010101001…
…000001011100110110
31202020012202121110022
4101002221001130312
5244433231404121
612223403525142
71215303514313
oct210251013466
952205677408
1018297919286
11783a775649
123667b297b2
131957b8029a
14c5821bd0a
15721605aab
hex442a41736

18297919286 has 8 divisors (see below), whose sum is σ = 28393323120. Its totient is φ = 8833478248.

The previous prime is 18297919279. The next prime is 18297919303. The reversal of 18297919286 is 68291979281.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157740626 + ... + 157740741.

It is an arithmetic number, because the mean of its divisors is an integer number (3549165390).

Almost surely, 218297919286 is an apocalyptic number.

18297919286 is a deficient number, since it is larger than the sum of its proper divisors (10095403834).

18297919286 is a wasteful number, since it uses less digits than its factorization.

18297919286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315481398.

The product of its digits is 7838208, while the sum is 62.

The spelling of 18297919286 in words is "eighteen billion, two hundred ninety-seven million, nine hundred nineteen thousand, two hundred eighty-six".

Divisors: 1 2 29 58 315481367 630962734 9148959643 18297919286