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18230550382 = 2116319191429
BaseRepresentation
bin10000111110101000…
…000001111101101110
31202001111222220200201
4100332220001331232
5244314010103012
612212555544114
71213525056442
oct207650017556
952044886621
1018230550382
117805741370
12364945b03a
131946c23225
14c4d2c2822
1571a749857
hex43ea01f6e

18230550382 has 32 divisors (see below), whose sum is σ = 29932531200. Its totient is φ = 8258695200.

The previous prime is 18230550379. The next prime is 18230550383. The reversal of 18230550382 is 28305503281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18230550383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12756844 + ... + 12758272.

It is an arithmetic number, because the mean of its divisors is an integer number (935391600).

Almost surely, 218230550382 is an apocalyptic number.

18230550382 is a deficient number, since it is larger than the sum of its proper divisors (11701980818).

18230550382 is a wasteful number, since it uses less digits than its factorization.

18230550382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 18230550382 in words is "eighteen billion, two hundred thirty million, five hundred fifty thousand, three hundred eighty-two".

Divisors: 1 2 11 22 631 919 1262 1429 1838 2858 6941 10109 13882 15719 20218 31438 579889 901699 1159778 1313251 1803398 2626502 6378779 9918689 12757558 14445761 19837378 28891522 828661381 1657322762 9115275191 18230550382