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1000800001 = 31251128621
BaseRepresentation
bin111011101001101…
…111111100000001
32120202011220111201
4323221233330001
54022201100001
6243150341201
733541442155
oct7351577401
92522156451
101000800001
11473a1a943
1223b1ba801
1312c45a366
1496cb9065
155ccdd501
hex3ba6ff01

1000800001 has 8 divisors (see below), whose sum is σ = 1037207808. Its totient is φ = 964650000.

The previous prime is 1000799993. The next prime is 1000800023. The reversal of 1000800001 is 1000080001.

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 1000800001 - 23 = 1000799993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000800041) 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, 56530 + ... + 72091.

It is an arithmetic number, because the mean of its divisors is an integer number (129650976).

Almost surely, 21000800001 is an apocalyptic number.

It is an amenable number.

1000800001 is a deficient number, since it is larger than the sum of its proper divisors (36407807).

1000800001 is a wasteful number, since it uses less digits than its factorization.

1000800001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128903.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1000800001 is about 31635.4231993188. The cubic root of 1000800001 is about 1000.2665959203.

Adding to 1000800001 its reverse (1000080001), we get a palindrome (2000880002).

It can be divided in two parts, 100080000 and 1, that added together give a palindrome (100080001).

The spelling of 1000800001 in words is "one billion, eight hundred thousand, one".

Divisors: 1 31 251 7781 128621 3987251 32283871 1000800001