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1081082001 = 31694321269
BaseRepresentation
bin100000001110000…
…0000000010010001
32210100020122201010
41000130000002101
54203224111001
6255135201133
735535021366
oct10034000221
92710218633
101081082001
115052739aa
122620761a9
13142c88bbc
14a381646d
1564d9a8d6
hex40700091

1081082001 has 8 divisors (see below), whose sum is σ = 1441595520. Its totient is φ = 720644912.

The previous prime is 1081081999. The next prime is 1081082011. The reversal of 1081082001 is 1002801801.

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 1081082001 - 21 = 1081081999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1081082011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40195 + ... + 61463.

It is an arithmetic number, because the mean of its divisors is an integer number (180199440).

Almost surely, 21081082001 is an apocalyptic number.

It is an amenable number.

1081082001 is a deficient number, since it is larger than the sum of its proper divisors (360513519).

1081082001 is a wasteful number, since it uses less digits than its factorization.

1081082001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38215.

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 1081082001 is about 32879.8114501893. The cubic root of 1081082001 is about 1026.3280824789.

Adding to 1081082001 its reverse (1002801801), we get a palindrome (2083883802).

The spelling of 1081082001 in words is "one billion, eighty-one million, eighty-two thousand, one".

Divisors: 1 3 16943 21269 50829 63807 360360667 1081082001