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18379051 = 155911789
BaseRepresentation
bin100011000011…
…1000100101011
31021120202022121
41012013010223
514201112201
61453532111
7312135145
oct106070453
937522277
1018379051
11a4134a9
1261a4037
133a666a2
142625c95
1519309a1
hex118712b

18379051 has 4 divisors (see below), whose sum is σ = 18392400. Its totient is φ = 18365704.

The previous prime is 18379037. The next prime is 18379079. The reversal of 18379051 is 15097381.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18379051 - 27 = 18378923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18378998 and 18379016.

It is not an unprimeable number, because it can be changed into a prime (18379351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4336 + ... + 7453.

It is an arithmetic number, because the mean of its divisors is an integer number (4598100).

Almost surely, 218379051 is an apocalyptic number.

18379051 is a deficient number, since it is larger than the sum of its proper divisors (13349).

18379051 is a wasteful number, since it uses less digits than its factorization.

18379051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13348.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 18379051 is about 4287.0795420659. The cubic root of 18379051 is about 263.9009949772.

The spelling of 18379051 in words is "eighteen million, three hundred seventy-nine thousand, fifty-one".

Divisors: 1 1559 11789 18379051