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19601490097 = 73138946367
BaseRepresentation
bin10010010000010101…
…110000000010110001
31212121001122212102201
4102100111300002301
5310120440140342
613001011543201
71262512626310
oct222025600261
955531585381
1019601490097
1183495916a2
1239705bab01
131b04c68667
14d3d3cc277
1579ac9ddb7
hex4905700b1

19601490097 has 8 divisors (see below), whose sum is σ = 22473276416. Its totient is φ = 16747597152.

The previous prime is 19601490091. The next prime is 19601490119. The reversal of 19601490097 is 79009410691.

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 19601490097 - 23 = 19601490089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19601490091) 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, 4470993 + ... + 4475374.

It is an arithmetic number, because the mean of its divisors is an integer number (2809159552).

Almost surely, 219601490097 is an apocalyptic number.

It is an amenable number.

19601490097 is a deficient number, since it is larger than the sum of its proper divisors (2871786319).

19601490097 is an equidigital number, since it uses as much as digits as its factorization.

19601490097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8946687.

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 19601490097 in words is "nineteen billion, six hundred one million, four hundred ninety thousand, ninety-seven".

Divisors: 1 7 313 2191 8946367 62624569 2800212871 19601490097