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1300320091 = 7290963857
BaseRepresentation
bin100110110000001…
…0100111101011011
310100121210002211101
41031200110331123
510130340220331
6333010212231
744136352450
oct11540247533
93317702741
101300320091
11607aa6804
12303584077
1317951a895
14c49a5827
1579255061
hex4d814f5b

1300320091 has 8 divisors (see below), whose sum is σ = 1486614240. Its totient is φ = 1114159488.

The previous prime is 1300320071. The next prime is 1300320097. The reversal of 1300320091 is 1900230031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1300320091 - 213 = 1300311899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1300320097) 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, 11566 + ... + 52291.

It is an arithmetic number, because the mean of its divisors is an integer number (185826780).

Almost surely, 21300320091 is an apocalyptic number.

1300320091 is a deficient number, since it is larger than the sum of its proper divisors (186294149).

1300320091 is an equidigital number, since it uses as much as digits as its factorization.

1300320091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66773.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 1300320091 is about 36059.9513449478. The cubic root of 1300320091 is about 1091.4824513613.

The spelling of 1300320091 in words is "one billion, three hundred million, three hundred twenty thousand, ninety-one".

Divisors: 1 7 2909 20363 63857 446999 185760013 1300320091