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18830995 = 519198221
BaseRepresentation
bin100011111010…
…1011010010011
31022102201021021
41013311122103
514310042440
61511340311
7316026601
oct107653223
938381237
1018830995
11a6a2007
126381697
133b94301
142702871
1519be84a
hex11f5693

18830995 has 8 divisors (see below), whose sum is σ = 23786640. Its totient is φ = 14271840.

The previous prime is 18830989. The next prime is 18831011. The reversal of 18830995 is 59903881.

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

It is not a de Polignac number, because 18830995 - 211 = 18828947 is a prime.

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, 99016 + ... + 99205.

It is an arithmetic number, because the mean of its divisors is an integer number (2973330).

Almost surely, 218830995 is an apocalyptic number.

18830995 is a deficient number, since it is larger than the sum of its proper divisors (4955645).

18830995 is a wasteful number, since it uses less digits than its factorization.

18830995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198245.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 18830995 is about 4339.4694376156. The cubic root of 18830995 is about 266.0466262698.

The spelling of 18830995 in words is "eighteen million, eight hundred thirty thousand, nine hundred ninety-five".

Divisors: 1 5 19 95 198221 991105 3766199 18830995