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19621084047 = 316094064861
BaseRepresentation
bin10010010001100000…
…011111101110001111
31212122102112100021120
4102101200133232033
5310140444142142
613002551532023
71263141314445
oct222140375617
955572470246
1019621084047
118359654944
12397708a013
131b09039006
14d41c4cb95
1579c86e7ec
hex49181fb8f

19621084047 has 8 divisors (see below), whose sum is σ = 26177711280. Its totient is φ = 13072589760.

The previous prime is 19621084039. The next prime is 19621084061. The reversal of 19621084047 is 74048012691.

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

It is not a de Polignac number, because 19621084047 - 23 = 19621084039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19621084037) 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, 2027604 + ... + 2037257.

It is an arithmetic number, because the mean of its divisors is an integer number (3272213910).

Almost surely, 219621084047 is an apocalyptic number.

19621084047 is a deficient number, since it is larger than the sum of its proper divisors (6556627233).

19621084047 is a wasteful number, since it uses less digits than its factorization.

19621084047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066473.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 19621084047 in words is "nineteen billion, six hundred twenty-one million, eighty-four thousand, forty-seven".

Divisors: 1 3 1609 4827 4064861 12194583 6540361349 19621084047