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1009201893 = 3726865319
BaseRepresentation
bin111100001001110…
…011001011100101
32121022222202201220
4330021303023211
54031323430033
6244050410553
734003034400
oct7411631345
92538882656
101009201893
11478739357
12241b90a59
1313110c6ab
1498064d37
155d8ecbb3
hex3c2732e5

1009201893 has 12 divisors (see below), whose sum is σ = 1565292960. Its totient is φ = 576686712.

The previous prime is 1009201867. The next prime is 1009201939. The reversal of 1009201893 is 3981029001.

It is not a de Polignac number, because 1009201893 - 216 = 1009136357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009201493) 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, 3432513 + ... + 3432806.

It is an arithmetic number, because the mean of its divisors is an integer number (130441080).

Almost surely, 21009201893 is an apocalyptic number.

It is an amenable number.

1009201893 is a deficient number, since it is larger than the sum of its proper divisors (556091067).

1009201893 is an equidigital number, since it uses as much as digits as its factorization.

1009201893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865336 (or 6865329 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1009201893 is about 31767.9381295041. The cubic root of 1009201893 is about 1003.0579371555.

The spelling of 1009201893 in words is "one billion, nine million, two hundred one thousand, eight hundred ninety-three".

Divisors: 1 3 7 21 49 147 6865319 20595957 48057233 144171699 336400631 1009201893