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190083819 = 397653209
BaseRepresentation
bin10110101010001…
…11001011101011
3111020200020222110
423111013023223
5342130140234
630510053403
74465454142
oct1325071353
9436606873
10190083819
119832a872
12537aa263
13304c4943
141b360759
1511a4b1e9
hexb5472eb

190083819 has 8 divisors (see below), whose sum is σ = 256058320. Its totient is φ = 125415936.

The previous prime is 190083791. The next prime is 190083833. The reversal of 190083819 is 918380091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 190083819 - 212 = 190079723 is a prime.

It is a super-2 number, since 2×1900838192 = 72263716491249522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190083889) 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, 326314 + ... + 326895.

It is an arithmetic number, because the mean of its divisors is an integer number (32007290).

Almost surely, 2190083819 is an apocalyptic number.

190083819 is a deficient number, since it is larger than the sum of its proper divisors (65974501).

190083819 is an equidigital number, since it uses as much as digits as its factorization.

190083819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653309.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 190083819 is about 13787.0888515306. The cubic root of 190083819 is about 574.9742335020.

The spelling of 190083819 in words is "one hundred ninety million, eighty-three thousand, eight hundred nineteen".

Divisors: 1 3 97 291 653209 1959627 63361273 190083819