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1383668836 = 221131447019
BaseRepresentation
bin101001001111001…
…0001110001100100
310120102121122210221
41102132101301210
510313204400321
6345144454124
746200663634
oct12236216144
93512548727
101383668836
11650054970
1232747a344
13190881274
14d1aa06c4
158171ae41
hex52791c64

1383668836 has 12 divisors (see below), whose sum is σ = 2641549680. Its totient is φ = 628940360.

The previous prime is 1383668821. The next prime is 1383668857. The reversal of 1383668836 is 6388663831.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15723466 + ... + 15723553.

It is an arithmetic number, because the mean of its divisors is an integer number (220129140).

Almost surely, 21383668836 is an apocalyptic number.

It is an amenable number.

1383668836 is a deficient number, since it is larger than the sum of its proper divisors (1257880844).

1383668836 is a wasteful number, since it uses less digits than its factorization.

1383668836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31447034 (or 31447032 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 52.

The square root of 1383668836 is about 37197.6993374590. The cubic root of 1383668836 is about 1114.3220384734.

The spelling of 1383668836 in words is "one billion, three hundred eighty-three million, six hundred sixty-eight thousand, eight hundred thirty-six".

Divisors: 1 2 4 11 22 44 31447019 62894038 125788076 345917209 691834418 1383668836