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1380485015 = 57133034033
BaseRepresentation
bin101001001001000…
…1000011110010111
310120012121220102122
41102102020132113
510311401010030
6344552330155
746131633440
oct12222103627
93505556378
101380485015
1164927a908
123263a395b
13190008050
14d14b22c7
15812dc8e5
hex52488797

1380485015 has 16 divisors (see below), whose sum is σ = 2038870848. Its totient is φ = 873801216.

The previous prime is 1380484991. The next prime is 1380485023. The reversal of 1380485015 is 5105840831.

It is a cyclic number.

It is not a de Polignac number, because 1380485015 - 28 = 1380484759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1516562 + ... + 1517471.

It is an arithmetic number, because the mean of its divisors is an integer number (127429428).

Almost surely, 21380485015 is an apocalyptic number.

1380485015 is a deficient number, since it is larger than the sum of its proper divisors (658385833).

1380485015 is a wasteful number, since it uses less digits than its factorization.

1380485015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034058.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 1380485015 is about 37154.8787509797. The cubic root of 1380485015 is about 1113.4666973538.

The spelling of 1380485015 in words is "one billion, three hundred eighty million, four hundred eighty-five thousand, fifteen".

Divisors: 1 5 7 13 35 65 91 455 3034033 15170165 21238231 39442429 106191155 197212145 276097003 1380485015