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130518037 = 1328135729
BaseRepresentation
bin1111100011110…
…00110000010101
3100002121000002101
413301320300111
5231403034122
620541242101
73143246026
oct761706025
9302530071
10130518037
1167746151
1237863331
132106a510
1413496c4d
15b6d2027
hex7c78c15

130518037 has 8 divisors (see below), whose sum is σ = 141062040. Its totient is φ = 120046080.

The previous prime is 130518023. The next prime is 130518041. The reversal of 130518037 is 730815031.

It can be written as a sum of positive squares in 4 ways, for example, as 421201 + 130096836 = 649^2 + 11406^2 .

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 130518037 - 27 = 130517909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130517996 and 130518014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130518097) 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, 14212 + ... + 21517.

It is an arithmetic number, because the mean of its divisors is an integer number (17632755).

Almost surely, 2130518037 is an apocalyptic number.

It is an amenable number.

130518037 is a deficient number, since it is larger than the sum of its proper divisors (10544003).

130518037 is a wasteful number, since it uses less digits than its factorization.

130518037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36023.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 130518037 is about 11424.4490895623. The cubic root of 130518037 is about 507.2516999021.

The spelling of 130518037 in words is "one hundred thirty million, five hundred eighteen thousand, thirty-seven".

Divisors: 1 13 281 3653 35729 464477 10039849 130518037