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19100909102 = 21129110327143
BaseRepresentation
bin10001110010100000…
…001011111000101110
31211022011201201101212
4101302200023320232
5303104313042402
612435210434422
71244224022432
oct216240137056
954264651355
1019100909102
118111a687a0
123850a32a12
131a5533bca2
14cd2b249c2
1576bd6d952
hex47280be2e

19100909102 has 32 divisors (see below), whose sum is σ = 32364334080. Its totient is φ = 8374935520.

The previous prime is 19100909101. The next prime is 19100909111. The reversal of 19100909102 is 20190900191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19100909101) 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, 690143 + ... + 717285.

It is an arithmetic number, because the mean of its divisors is an integer number (1011385440).

Almost surely, 219100909102 is an apocalyptic number.

19100909102 is a deficient number, since it is larger than the sum of its proper divisors (13263424978).

19100909102 is a wasteful number, since it uses less digits than its factorization.

19100909102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28288.

The product of its (nonzero) digits is 1458, while the sum is 32.

The spelling of 19100909102 in words is "nineteen billion, one hundred million, nine hundred nine thousand, one hundred two".

Divisors: 1 2 11 22 29 58 319 638 1103 2206 12133 24266 27143 31987 54286 63974 298573 351857 597146 703714 787147 1574294 8658617 17317234 29938729 59877458 329326019 658652038 868223141 1736446282 9550454551 19100909102