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1807139095 = 52319381421
BaseRepresentation
bin110101110110110…
…1100000100010111
311122221110011210121
41223231230010113
512200111422340
6455153132411
762532300046
oct15355540427
94587404717
101807139095
118480a0393
1242525a107
1322a51c698
1413201455d
15a89b894a
hex6bb6c117

1807139095 has 16 divisors (see below), whose sum is σ = 2274604992. Its totient is φ = 1375672320.

The previous prime is 1807139093. The next prime is 1807139129. The reversal of 1807139095 is 5909317081.

It is not a de Polignac number, because 1807139095 - 21 = 1807139093 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 (1807139093) 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 15 ways as a sum of consecutive naturals, for example, 18516 + ... + 62905.

It is an arithmetic number, because the mean of its divisors is an integer number (142162812).

Almost surely, 21807139095 is an apocalyptic number.

1807139095 is a deficient number, since it is larger than the sum of its proper divisors (467465897).

1807139095 is a wasteful number, since it uses less digits than its factorization.

1807139095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81642.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 1807139095 is about 42510.4586543124. The cubic root of 1807139095 is about 1218.0464783193.

The spelling of 1807139095 in words is "one billion, eight hundred seven million, one hundred thirty-nine thousand, ninety-five".

Divisors: 1 5 23 115 193 965 4439 22195 81421 407105 1872683 9363415 15714253 78571265 361427819 1807139095