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18191929110002 = 219716742746149
BaseRepresentation
bin1000010001011101000110…
…11110001110110111110010
32101102010112211002122111022
410020232203132032313302
54341024032323010002
6102405131252015442
73555215651026154
oct410564336166762
971363484078438
1018191929110002
1158841767a132a
122059874301582
13a1c650c37a9b
1446c6cba10ad4
152183319ccba2
hex108ba378edf2

18191929110002 has 16 divisors (see below), whose sum is σ = 29128663368000. Its totient is φ = 8495860146480.

The previous prime is 18191929109987. The next prime is 18191929110007. The reversal of 18191929110002 is 20001192919181.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18191929110007) 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, 3371370377 + ... + 3371375772.

It is an arithmetic number, because the mean of its divisors is an integer number (1820541460500).

Almost surely, 218191929110002 is an apocalyptic number.

18191929110002 is a deficient number, since it is larger than the sum of its proper divisors (10936734257998).

18191929110002 is a wasteful number, since it uses less digits than its factorization.

18191929110002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6742746241.

The product of its (nonzero) digits is 23328, while the sum is 44.

The spelling of 18191929110002 in words is "eighteen trillion, one hundred ninety-one billion, nine hundred twenty-nine million, one hundred ten thousand, two".

Divisors: 1 2 19 38 71 142 1349 2698 6742746149 13485492298 128112176831 256224353662 478734976579 957469953158 9095964555001 18191929110002