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2085193931 = 19293784381
BaseRepresentation
bin111110001001001…
…1000100011001011
312101022122211022212
41330102120203023
513232302201211
6542524535335
7102446566412
oct17422304313
95338584285
102085193931
11980046077
124a23b154b
13273005882
1415ad14479
15c30e038b
hex7c4988cb

2085193931 has 8 divisors (see below), whose sum is σ = 2270629200. Its totient is φ = 1907327520.

The previous prime is 2085193919. The next prime is 2085193933. The reversal of 2085193931 is 1393915802.

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

It is a cyclic number.

It is not a de Polignac number, because 2085193931 - 214 = 2085177547 is a prime.

It is a super-2 number, since 2×20851939312 = 8696067459758465522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2085193933) 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, 1891640 + ... + 1892741.

It is an arithmetic number, because the mean of its divisors is an integer number (283828650).

Almost surely, 22085193931 is an apocalyptic number.

2085193931 is a deficient number, since it is larger than the sum of its proper divisors (185435269).

2085193931 is a wasteful number, since it uses less digits than its factorization.

2085193931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784429.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 2085193931 is about 45663.9237363589. The cubic root of 2085193931 is about 1277.5624858025.

The spelling of 2085193931 in words is "two billion, eighty-five million, one hundred ninety-three thousand, nine hundred thirty-one".

Divisors: 1 19 29 551 3784381 71903239 109747049 2085193931