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19133149 = 722712041
BaseRepresentation
bin100100011111…
…1001011011101
31100000001202011
41020333023131
514344230044
61522031221
7321425530
oct110771335
940001664
1019133149
11a889022
1264a8511
133c6b9b9
142780a17
151a2e134
hex123f2dd

19133149 has 8 divisors (see below), whose sum is σ = 21964608. Its totient is φ = 16326240.

The previous prime is 19133141. The next prime is 19133167. The reversal of 19133149 is 94133191.

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

It is not a de Polignac number, because 19133149 - 23 = 19133141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19133149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19133141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4432 + ... + 7609.

It is an arithmetic number, because the mean of its divisors is an integer number (2745576).

Almost surely, 219133149 is an apocalyptic number.

It is an amenable number.

19133149 is a deficient number, since it is larger than the sum of its proper divisors (2831459).

19133149 is a wasteful number, since it uses less digits than its factorization.

19133149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12275.

The product of its digits is 2916, while the sum is 31.

The square root of 19133149 is about 4374.1455165552. The cubic root of 19133149 is about 267.4620390421.

The spelling of 19133149 in words is "nineteen million, one hundred thirty-three thousand, one hundred forty-nine".

Divisors: 1 7 227 1589 12041 84287 2733307 19133149