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1380775486 = 21936336197
BaseRepresentation
bin101001001001100…
…1111011000111110
310120020011122212211
41102103033120332
510311434303421
6345002451034
746134253336
oct12223173076
93506148784
101380775486
11649459072
12326503a7a
131900aa31c
14d154a0c6
15813489e1
hex524cf63e

1380775486 has 8 divisors (see below), whose sum is σ = 2180171880. Its totient is φ = 654051528.

The previous prime is 1380775441. The next prime is 1380775489. The reversal of 1380775486 is 6845770831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380775489) 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 3 ways as a sum of consecutive naturals, for example, 18168061 + ... + 18168136.

It is an arithmetic number, because the mean of its divisors is an integer number (272521485).

Almost surely, 21380775486 is an apocalyptic number.

1380775486 is a deficient number, since it is larger than the sum of its proper divisors (799396394).

1380775486 is a wasteful number, since it uses less digits than its factorization.

1380775486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36336218.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The square root of 1380775486 is about 37158.7874667622. The cubic root of 1380775486 is about 1113.5447875659.

The spelling of 1380775486 in words is "one billion, three hundred eighty million, seven hundred seventy-five thousand, four hundred eighty-six".

Divisors: 1 2 19 38 36336197 72672394 690387743 1380775486