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2642892893 = 611372291381
BaseRepresentation
bin1001110110000111…
…0101100001011101
320211012001212110222
42131201311201131
520403040033033
61114130211125
7122331135044
oct23541654135
96735055428
102642892893
111136931603
12619123aa5
13331710464
141b100955b
15107054598
hex9d87585d

2642892893 has 16 divisors (see below), whose sum is σ = 2719610160. Its totient is φ = 2567462400.

The previous prime is 2642892877. The next prime is 2642892899. The reversal of 2642892893 is 3982982462.

It can be written as a sum of positive squares in 8 ways, for example, as 1138489 + 2641754404 = 1067^2 + 51398^2 .

It is a cyclic number.

It is not a de Polignac number, because 2642892893 - 24 = 2642892877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2642892899) 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, 1913063 + ... + 1914443.

It is an arithmetic number, because the mean of its divisors is an integer number (169975635).

Almost surely, 22642892893 is an apocalyptic number.

It is an amenable number.

2642892893 is a deficient number, since it is larger than the sum of its proper divisors (76717267).

2642892893 is a wasteful number, since it uses less digits than its factorization.

2642892893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808.

The product of its digits is 2985984, while the sum is 53.

The square root of 2642892893 is about 51409.0740336762. The cubic root of 2642892893 is about 1382.5892878556.

The spelling of 2642892893 in words is "two billion, six hundred forty-two million, eight hundred ninety-two thousand, eight hundred ninety-three".

Divisors: 1 61 137 229 1381 8357 13969 31373 84241 189197 316249 1913753 11541017 19291189 43326113 2642892893