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919130310100 = 225210191003001
BaseRepresentation
bin11010110000000000110…
…11111000010111010100
310020212102202211112020001
431120000123320113110
5110024334324410400
61542124224221044
7123255622505242
oct15300033702724
93225382745201
10919130310100
1132488a109a32
1212a172a6a784
136889ac20522
14326b3da1792
1518d96c56a6a
hexd6006f85d4

919130310100 has 36 divisors (see below), whose sum is σ = 2014260446268. Its totient is φ = 364012000000.

The previous prime is 919130310097. The next prime is 919130310107. The reversal of 919130310100 is 1013031919.

It can be written as a sum of positive squares in 6 ways, for example, as 90800974224 + 828329335876 = 301332^2 + 910126^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919130310107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45491401 + ... + 45511600.

It is an arithmetic number, because the mean of its divisors is an integer number (55951679063).

Almost surely, 2919130310100 is an apocalyptic number.

It is an amenable number.

919130310100 is an abundant number, since it is smaller than the sum of its proper divisors (1095130136168).

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

919130310100 is a wasteful number, since it uses less digits than its factorization.

919130310100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91003116 (or 91003109 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 28.

The spelling of 919130310100 in words is "nine hundred nineteen billion, one hundred thirty million, three hundred ten thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 101 202 404 505 1010 2020 2525 5050 10100 91003001 182006002 364012004 455015005 910030010 1820060020 2275075025 4550150050 9100300100 9191303101 18382606202 36765212404 45956515505 91913031010 183826062020 229782577525 459565155050 919130310100