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18414933472 = 2513311427957
BaseRepresentation
bin10001001001100111…
…011001010111100000
31202112100221112202001
4101021213121113200
5300203210332342
612243143533344
71221224231455
oct211147312740
952470845661
1018414933472
11789a828091
12369b15a254
1319761a0150
14c6999b82c
1572ba1b8b7
hex4499d95e0

18414933472 has 48 divisors (see below), whose sum is σ = 40302686592. Its totient is φ = 8225026560.

The previous prime is 18414933461. The next prime is 18414933473. The reversal of 18414933472 is 27433941481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18414933473) 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, 701083 + ... + 726874.

It is an arithmetic number, because the mean of its divisors is an integer number (839639304).

Almost surely, 218414933472 is an apocalyptic number.

It is an amenable number.

18414933472 is an abundant number, since it is smaller than the sum of its proper divisors (21887753120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18414933472 is a wasteful number, since it uses less digits than its factorization.

18414933472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428011 (or 1428003 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The spelling of 18414933472 in words is "eighteen billion, four hundred fourteen million, nine hundred thirty-three thousand, four hundred seventy-two".

Divisors: 1 2 4 8 13 16 26 31 32 52 62 104 124 208 248 403 416 496 806 992 1612 3224 6448 12896 1427957 2855914 5711828 11423656 18563441 22847312 37126882 44266667 45694624 74253764 88533334 148507528 177066668 297015056 354133336 575466671 594030112 708266672 1150933342 1416533344 2301866684 4603733368 9207466736 18414933472