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19054013 = 111799677
BaseRepresentation
bin100100010101…
…1110110111101
31022212001012012
41020223312331
514334212023
61520221005
7320646026
oct110536675
938761165
1019054013
11a834620
12646a765
133c41984
14275dc4d
151a15978
hex122bdbd

19054013 has 8 divisors (see below), whose sum is σ = 20904480. Its totient is φ = 17223280.

The previous prime is 19054003. The next prime is 19054027. The reversal of 19054013 is 31045091.

It is a happy number.

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 19054013 - 24 = 19053997 is a prime.

It is a super-2 number, since 2×190540132 = 726110822808338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19054013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19054003) 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, 2870 + ... + 6807.

It is an arithmetic number, because the mean of its divisors is an integer number (2613060).

Almost surely, 219054013 is an apocalyptic number.

It is an amenable number.

19054013 is a deficient number, since it is larger than the sum of its proper divisors (1850467).

19054013 is a wasteful number, since it uses less digits than its factorization.

19054013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9867.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 19054013 is about 4365.0902625261. The cubic root of 19054013 is about 267.0927824476.

The spelling of 19054013 in words is "nineteen million, fifty-four thousand, thirteen".

Divisors: 1 11 179 1969 9677 106447 1732183 19054013