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1982107357 = 31449142403
BaseRepresentation
bin111011000100100…
…1000111011011101
312010010200111010121
41312021020323131
513024404413412
6524403234541
7100055430436
oct16611107335
95103614117
101982107357
1192793665a
12473978a51
132578511b9
1414b35c48d
15b902b107
hex76248edd

1982107357 has 8 divisors (see below), whose sum is σ = 2050617600. Its totient is φ = 1913882880.

The previous prime is 1982107319. The next prime is 1982107373. The reversal of 1982107357 is 7537012891.

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 1982107357 - 211 = 1982105309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982107307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57283 + ... + 85120.

It is an arithmetic number, because the mean of its divisors is an integer number (256327200).

Almost surely, 21982107357 is an apocalyptic number.

It is an amenable number.

1982107357 is a deficient number, since it is larger than the sum of its proper divisors (68510243).

1982107357 is a wasteful number, since it uses less digits than its factorization.

1982107357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142883.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 1982107357 is about 44520.8642885558. The cubic root of 1982107357 is about 1256.1525698487.

It can be divided in two parts, 1982107 and 357, that added together give a square (1982464 = 14082).

The spelling of 1982107357 in words is "one billion, nine hundred eighty-two million, one hundred seven thousand, three hundred fifty-seven".

Divisors: 1 31 449 13919 142403 4414493 63938947 1982107357