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1813014492 = 2231147113171
BaseRepresentation
bin110110000010000…
…0110011111011100
311200100111200022220
41230010012133130
512203112430432
6455523105340
762633240352
oct15404063734
94610450286
101813014492
11850443693
12427212250
1322b7c8a53
14132b037d2
15a927972c
hex6c1067dc

1813014492 has 24 divisors (see below), whose sum is σ = 4231057152. Its totient is φ = 604239600.

The previous prime is 1813014457. The next prime is 1813014493. The reversal of 1813014492 is 2944103181.

It is a happy number.

It is a super-3 number, since 3×18130144923 (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813014493) 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, 131067 + ... + 144237.

It is an arithmetic number, because the mean of its divisors is an integer number (176294048).

Almost surely, 21813014492 is an apocalyptic number.

1813014492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1813014492 is an abundant number, since it is smaller than the sum of its proper divisors (2418042660).

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

1813014492 is a wasteful number, since it uses less digits than its factorization.

1813014492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24649 (or 24647 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1813014492 is about 42579.5078881849. The cubic root of 1813014492 is about 1219.3650938118.

The spelling of 1813014492 in words is "one billion, eight hundred thirteen million, fourteen thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 12 11471 13171 22942 26342 34413 39513 45884 52684 68826 79026 137652 158052 151084541 302169082 453253623 604338164 906507246 1813014492