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1518080053 = 7216868579
BaseRepresentation
bin101101001111100…
…0001000000110101
310220210112110100011
41122133001000311
511102112030203
6410345420221
752422316240
oct13237010065
93823473304
101518080053
11709a0a016
1236449a671
131b2682829
1410588c257
158d41b76d
hex5a7c1035

1518080053 has 4 divisors (see below), whose sum is σ = 1734948640. Its totient is φ = 1301211468.

The previous prime is 1518080027. The next prime is 1518080071. The reversal of 1518080053 is 3500808151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1518080053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1518079997 and 1518080024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1518000053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108434283 + ... + 108434296.

It is an arithmetic number, because the mean of its divisors is an integer number (433737160).

Almost surely, 21518080053 is an apocalyptic number.

It is an amenable number.

1518080053 is a deficient number, since it is larger than the sum of its proper divisors (216868587).

1518080053 is an equidigital number, since it uses as much as digits as its factorization.

1518080053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216868586.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 1518080053 is about 38962.5467981753. The cubic root of 1518080053 is about 1149.2951075330.

The spelling of 1518080053 in words is "one billion, five hundred eighteen million, eighty thousand, fifty-three".

Divisors: 1 7 216868579 1518080053