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11819408147 = 19907685859
BaseRepresentation
bin10110000000111110…
…11101101100010011
31010111201022010220022
423000133131230103
5143201232030042
65232454534055
7565616211611
oct130037355423
933451263808
1011819408147
115015825308
12235a36732b
131164914441
14801a4c6b1
1549299bcd2
hex2c07ddb13

11819408147 has 8 divisors (see below), whose sum is σ = 12455217600. Its totient is φ = 11184972264.

The previous prime is 11819408141. The next prime is 11819408149. The reversal of 11819408147 is 74180491811.

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 11819408147 - 226 = 11752299283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11819408098 and 11819408107.

It is not an unprimeable number, because it can be changed into a prime (11819408141) 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, 325697 + ... + 360162.

It is an arithmetic number, because the mean of its divisors is an integer number (1556902200).

Almost surely, 211819408147 is an apocalyptic number.

11819408147 is a deficient number, since it is larger than the sum of its proper divisors (635809453).

11819408147 is an equidigital number, since it uses as much as digits as its factorization.

11819408147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686785.

The product of its (nonzero) digits is 64512, while the sum is 44.

Adding to 11819408147 its reverse (74180491811), we get a palindrome (85999899958).

The spelling of 11819408147 in words is "eleven billion, eight hundred nineteen million, four hundred eight thousand, one hundred forty-seven".

Divisors: 1 19 907 17233 685859 13031321 622074113 11819408147