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1081141087 = 13389213791
BaseRepresentation
bin100000001110000…
…1110011101011111
32210100100122202111
41000130032131133
54203233003322
6255140334451
735535355555
oct10034163537
92710318674
101081141087
11505304334
122620a4427
13142ca9a70
14a382dbd5
1564dad177
hex4070e75f

1081141087 has 8 divisors (see below), whose sum is σ = 1167304320. Its totient is φ = 995406240.

The previous prime is 1081141081. The next prime is 1081141157. The reversal of 1081141087 is 7801411801.

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 1081141087 - 23 = 1081141079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081141081) 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, 101839 + ... + 111952.

It is an arithmetic number, because the mean of its divisors is an integer number (145913040).

Almost surely, 21081141087 is an apocalyptic number.

1081141087 is a deficient number, since it is larger than the sum of its proper divisors (86163233).

1081141087 is a wasteful number, since it uses less digits than its factorization.

1081141087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214193.

The product of its (nonzero) digits is 1792, while the sum is 31.

The square root of 1081141087 is about 32880.7099527976. The cubic root of 1081141087 is about 1026.3467799555.

Adding to 1081141087 its reverse (7801411801), we get a palindrome (8882552888).

The spelling of 1081141087 in words is "one billion, eighty-one million, one hundred forty-one thousand, eighty-seven".

Divisors: 1 13 389 5057 213791 2779283 83164699 1081141087