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19001530108 = 22111953428851
BaseRepresentation
bin10001101100100101…
…000101011011111100
31211001020201202001101
4101230211011123330
5302403342430413
612421300422444
71241606224651
oct215445053374
954036652041
1019001530108
1180709608a0
1238236a7a24
131a3a885052
14cc3855c28
1576328cedd
hex46c9456fc

19001530108 has 48 divisors (see below), whose sum is σ = 38905453440. Its totient is φ = 8028072000.

The previous prime is 19001530103. The next prime is 19001530117. The reversal of 19001530108 is 80103510091.

It is a super-2 number, since 2×190015301082 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19001530103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170118 + ... + 258733.

It is an arithmetic number, because the mean of its divisors is an integer number (810530280).

Almost surely, 219001530108 is an apocalyptic number.

It is an amenable number.

19001530108 is an abundant number, since it is smaller than the sum of its proper divisors (19903923332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19001530108 is a wasteful number, since it uses less digits than its factorization.

19001530108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428938 (or 428936 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 19001530108 in words is "nineteen billion, one million, five hundred thirty thousand, one hundred eight".

Divisors: 1 2 4 11 19 22 38 44 53 76 106 209 212 418 583 836 1007 1166 2014 2332 4028 11077 22154 44308 428851 857702 1715404 4717361 8148169 9434722 16296338 18869444 22729103 32592676 45458206 89629859 90916412 179259718 250020133 358519436 431852957 500040266 863705914 1000080532 1727411828 4750382527 9500765054 19001530108