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1308906613 = 7577324067
BaseRepresentation
bin100111000000100…
…0101010001110101
310101012221100022201
41032001011101311
510140040002423
6333514224501
744302344160
oct11601052165
93335840281
101308906613
11611930a03
12306425131
1317b235c71
14c5b9cad7
1579d9e2ad
hex4e045475

1308906613 has 8 divisors (see below), whose sum is σ = 1498490432. Its totient is φ = 1119972096.

The previous prime is 1308906611. The next prime is 1308906617. The reversal of 1308906613 is 3166098031.

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 1308906613 - 21 = 1308906611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308906611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157995 + ... + 166072.

It is an arithmetic number, because the mean of its divisors is an integer number (187311304).

Almost surely, 21308906613 is an apocalyptic number.

It is an amenable number.

1308906613 is a deficient number, since it is larger than the sum of its proper divisors (189583819).

1308906613 is an equidigital number, since it uses as much as digits as its factorization.

1308906613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324651.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 1308906613 is about 36178.8144222555. The cubic root of 1308906613 is about 1093.8796776074.

The spelling of 1308906613 in words is "one billion, three hundred eight million, nine hundred six thousand, six hundred thirteen".

Divisors: 1 7 577 4039 324067 2268469 186986659 1308906613