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6415813093 = 18757342049
BaseRepresentation
bin1011111100110100…
…11000100111100101
3121120010111002000011
411332122120213211
5101114422004333
62540345050221
7314663340304
oct57632304745
917503432004
106415813093
1127a2617378
1212b0786971
137b3285b11
1444c12c43b
152783c19cd
hex17e6989e5

6415813093 has 4 divisors (see below), whose sum is σ = 6416173900. Its totient is φ = 6415452288.

The previous prime is 6415813069. The next prime is 6415813121. The reversal of 6415813093 is 3903185146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1257269764 + 5158543329 = 35458^2 + 71823^2 .

It is a cyclic number.

It is not a de Polignac number, because 6415813093 - 29 = 6415812581 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 (6415813013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152268 + ... + 189781.

It is an arithmetic number, because the mean of its divisors is an integer number (1604043475).

Almost surely, 26415813093 is an apocalyptic number.

It is an amenable number.

6415813093 is a deficient number, since it is larger than the sum of its proper divisors (360807).

6415813093 is a wasteful number, since it uses less digits than its factorization.

6415813093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360806.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 6415813093 is about 80098.7708582348. The cubic root of 6415813093 is about 1858.1633982024.

The spelling of 6415813093 in words is "six billion, four hundred fifteen million, eight hundred thirteen thousand, ninety-three".

Divisors: 1 18757 342049 6415813093