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19083149 = 7323581
BaseRepresentation
bin100100011001…
…0111110001101
31022220112011022
41020302332031
514341130044
61521003525
7321130001
oct110627615
938815138
1019083149
11a8544a8
1264835a5
133c52007
14276a701
151a1e3ee
hex1232f8d

19083149 has 6 divisors (see below), whose sum is σ = 19353546. Its totient is φ = 18816480.

The previous prime is 19083133. The next prime is 19083187. The reversal of 19083149 is 94138091.

It can be written as a sum of positive squares in 3 ways, for example, as 7645225 + 11437924 = 2765^2 + 3382^2 .

It is not a de Polignac number, because 19083149 - 24 = 19083133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19083109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3539 + ... + 7119.

It is an arithmetic number, because the mean of its divisors is an integer number (3225591).

Almost surely, 219083149 is an apocalyptic number.

It is an amenable number.

19083149 is a deficient number, since it is larger than the sum of its proper divisors (270397).

19083149 is an frugal number, since it uses more digits than its factorization.

19083149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727 (or 3654 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 19083149 is about 4368.4263757101. The cubic root of 19083149 is about 267.2288526832.

The spelling of 19083149 in words is "nineteen million, eighty-three thousand, one hundred forty-nine".

Divisors: 1 73 3581 5329 261413 19083149