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1230484489 = 1394652653
BaseRepresentation
bin100100101010111…
…1011010000001001
310011202101002101121
41021111323100021
510010001000424
6322033315241
742330642223
oct11125732011
93152332347
101230484489
11581638233
122a4105b21
13167c08b40
14b95c7413
157305cee4
hex4957b409

1230484489 has 4 divisors (see below), whose sum is σ = 1325137156. Its totient is φ = 1135831824.

The previous prime is 1230484481. The next prime is 1230484511. The reversal of 1230484489 is 9844840321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 371525625 + 858958864 = 19275^2 + 29308^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230484489 - 23 = 1230484481 is a prime.

It is a super-2 number, since 2×12304844892 = 3028184155339182242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230484481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47326314 + ... + 47326339.

It is an arithmetic number, because the mean of its divisors is an integer number (331284289).

Almost surely, 21230484489 is an apocalyptic number.

It is an amenable number.

1230484489 is a deficient number, since it is larger than the sum of its proper divisors (94652667).

1230484489 is an equidigital number, since it uses as much as digits as its factorization.

1230484489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94652666.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 1230484489 is about 35078.2623429383. The cubic root of 1230484489 is about 1071.5819291399.

The spelling of 1230484489 in words is "one billion, two hundred thirty million, four hundred eighty-four thousand, four hundred eighty-nine".

Divisors: 1 13 94652653 1230484489