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18607104949 = 231949415087
BaseRepresentation
bin10001010101000100…
…011110001110110101
31210000202112212110011
4101111010132032311
5301101404324244
612314210500221
71226046532246
oct212504361665
953022485404
1018607104949
117989253394
123733594671
1319a6c46094
14c87302ccd
1573d82b434
hex45511e3b5

18607104949 has 8 divisors (see below), whose sum is σ = 19426118400. Its totient is φ = 17788925616.

The previous prime is 18607104941. The next prime is 18607104991. The reversal of 18607104949 is 94940170681.

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 18607104949 - 23 = 18607104941 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 (18607104941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162717 + ... + 252370.

It is an arithmetic number, because the mean of its divisors is an integer number (2428264800).

Almost surely, 218607104949 is an apocalyptic number.

It is an amenable number.

18607104949 is a deficient number, since it is larger than the sum of its proper divisors (819013451).

18607104949 is a wasteful number, since it uses less digits than its factorization.

18607104949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417059.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 18607104949 in words is "eighteen billion, six hundred seven million, one hundred four thousand, nine hundred forty-nine".

Divisors: 1 23 1949 44827 415087 9547001 809004563 18607104949