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1308461089 = 13100650853
BaseRepresentation
bin100110111111101…
…1000100000100001
310101012002201011211
41031333120200201
510134431223324
6333500510121
744265510235
oct11577304041
93335081154
101308461089
11611657201
1230624b341
1317b10b240
14c5ac45c5
1579d12294
hex4dfd8821

1308461089 has 4 divisors (see below), whose sum is σ = 1409111956. Its totient is φ = 1207810224.

The previous prime is 1308461039. The next prime is 1308461093. The reversal of 1308461089 is 9801648031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9801648031 = 71400235433.

It can be written as a sum of positive squares in 2 ways, for example, as 82901025 + 1225560064 = 9105^2 + 35008^2 .

It is a cyclic number.

It is not a de Polignac number, because 1308461089 - 211 = 1308459041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1308461009) 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, 50325414 + ... + 50325439.

It is an arithmetic number, because the mean of its divisors is an integer number (352277989).

Almost surely, 21308461089 is an apocalyptic number.

It is an amenable number.

1308461089 is a deficient number, since it is larger than the sum of its proper divisors (100650867).

1308461089 is a wasteful number, since it uses less digits than its factorization.

1308461089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100650866.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 1308461089 is about 36172.6566483580. The cubic root of 1308461089 is about 1093.7555523898.

The spelling of 1308461089 in words is "one billion, three hundred eight million, four hundred sixty-one thousand, eighty-nine".

Divisors: 1 13 100650853 1308461089