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18874801 = 114141851
BaseRepresentation
bin100100000000…
…0000110110001
31022111221100201
41020000012301
514312443201
61512315201
7316301401
oct110000661
938457321
1018874801
11a721a10
1263a2b01
133bab22a
142714801
1519cc801
hex12001b1

18874801 has 8 divisors (see below), whose sum is σ = 21093408. Its totient is φ = 16740000.

The previous prime is 18874787. The next prime is 18874831. The reversal of 18874801 is 10847881.

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 18874801 - 25 = 18874769 is a prime.

It is a super-2 number, since 2×188748012 = 712516225579202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18874831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20475 + ... + 21376.

It is an arithmetic number, because the mean of its divisors is an integer number (2636676).

Almost surely, 218874801 is an apocalyptic number.

18874801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18874801 is a deficient number, since it is larger than the sum of its proper divisors (2218607).

18874801 is a wasteful number, since it uses less digits than its factorization.

18874801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41903.

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 18874801 is about 4344.5138968589. The cubic root of 18874801 is about 266.2527653691.

The spelling of 18874801 in words is "eighteen million, eight hundred seventy-four thousand, eight hundred one".

Divisors: 1 11 41 451 41851 460361 1715891 18874801