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190810193 = 7178571871
BaseRepresentation
bin10110101111110…
…00100001010001
3111022001011101012
423113320201101
5342321411233
630533420305
74504600640
oct1327704121
9438034335
10190810193
1198786582
1253a9a695
13306ba452
141b4ad357
1511b41548
hexb5f8851

190810193 has 16 divisors (see below), whose sum is σ = 231289344. Its totient is φ = 153669120.

The previous prime is 190810181. The next prime is 190810199. The reversal of 190810193 is 391018091.

190810193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 190810193 - 212 = 190806097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190810199) 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, 101048 + ... + 102918.

It is an arithmetic number, because the mean of its divisors is an integer number (14455584).

Almost surely, 2190810193 is an apocalyptic number.

It is an amenable number.

190810193 is a deficient number, since it is larger than the sum of its proper divisors (40479151).

190810193 is a wasteful number, since it uses less digits than its factorization.

190810193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 190810193 is about 13813.4062779606. The cubic root of 190810193 is about 575.7056923460.

The spelling of 190810193 in words is "one hundred ninety million, eight hundred ten thousand, one hundred ninety-three".

Divisors: 1 7 17 119 857 1871 5999 13097 14569 31807 101983 222649 1603447 11224129 27258599 190810193