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18862370253 = 324488746691
BaseRepresentation
bin10001100100010010…
…001110110111001101
31210200112212200121200
4101210102032313031
5302112231322003
612355410020113
71235266334046
oct214422166715
953615780550
1018862370253
117aaa352a51
1237a4b77639
131a17ab023c
14cad18d8cd
15755e506a3
hex46448edcd

18862370253 has 12 divisors (see below), whose sum is σ = 27246836448. Its totient is φ = 12574364040.

The previous prime is 18862370249. The next prime is 18862370279. The reversal of 18862370253 is 35207326881.

18862370253 is a `hidden beast` number, since 18 + 8 + 623 + 7 + 0 + 2 + 5 + 3 = 666.

It is not a de Polignac number, because 18862370253 - 22 = 18862370249 is a prime.

It is a super-2 number, since 2×188623702532 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18862370199 and 18862370208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18862370243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 380638 + ... + 427328.

It is an arithmetic number, because the mean of its divisors is an integer number (2270569704).

Almost surely, 218862370253 is an apocalyptic number.

It is an amenable number.

18862370253 is a deficient number, since it is larger than the sum of its proper divisors (8384466195).

18862370253 is a wasteful number, since it uses less digits than its factorization.

18862370253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91584 (or 91581 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 18862370253 in words is "eighteen billion, eight hundred sixty-two million, three hundred seventy thousand, two hundred fifty-three".

Divisors: 1 3 9 44887 46691 134661 140073 403983 420219 2095818917 6287456751 18862370253