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30418849449 = 323379872161
BaseRepresentation
bin11100010101000110…
…101100111010101001
32220111221102122210200
4130111012230322221
5444244211140244
621550233302413
72124543645162
oct342506547251
986457378720
1030418849449
111199a7138aa
125a8b264a09
132b3a0a6201
141687d18769
15bd07b2669
hex7151acea9

30418849449 has 6 divisors (see below), whose sum is σ = 43938338106. Its totient is φ = 20279232960.

The previous prime is 30418849441. The next prime is 30418849451. The reversal of 30418849449 is 94494881403.

30418849449 is a `hidden beast` number, since 30 + 4 + 1 + 88 + 494 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26554983849 + 3863865600 = 162957^2 + 62160^2 .

It is not a de Polignac number, because 30418849449 - 23 = 30418849441 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30418849395 and 30418849404.

It is not an unprimeable number, because it can be changed into a prime (30418849441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1689936072 + ... + 1689936089.

It is an arithmetic number, because the mean of its divisors is an integer number (7323056351).

Almost surely, 230418849449 is an apocalyptic number.

It is an amenable number.

30418849449 is a deficient number, since it is larger than the sum of its proper divisors (13519488657).

30418849449 is a wasteful number, since it uses less digits than its factorization.

30418849449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379872167 (or 3379872164 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 30418849449 in words is "thirty billion, four hundred eighteen million, eight hundred forty-nine thousand, four hundred forty-nine".

Divisors: 1 3 9 3379872161 10139616483 30418849449