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1381533886 = 24716788007
BaseRepresentation
bin101001001011000…
…1000100010111110
310120021121012012201
41102112020202332
510312133041021
6345031022114
746143562405
oct12226104276
93507535181
101381533886
11649926947
1232680a93a
131902b4595
14d16a663c
1581448591
hex525888be

1381533886 has 16 divisors (see below), whose sum is σ = 2129089536. Its totient is φ = 672013816.

The previous prime is 1381533851. The next prime is 1381533887. The reversal of 1381533886 is 6883351831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381533887) 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, 28306 + ... + 59701.

It is an arithmetic number, because the mean of its divisors is an integer number (133068096).

Almost surely, 21381533886 is an apocalyptic number.

1381533886 is a deficient number, since it is larger than the sum of its proper divisors (747555650).

1381533886 is a wasteful number, since it uses less digits than its factorization.

1381533886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88223.

The product of its digits is 414720, while the sum is 46.

The square root of 1381533886 is about 37168.9909198515. The cubic root of 1381533886 is about 1113.7486241792.

The spelling of 1381533886 in words is "one billion, three hundred eighty-one million, five hundred thirty-three thousand, eight hundred eighty-six".

Divisors: 1 2 47 94 167 334 7849 15698 88007 176014 4136329 8272658 14697169 29394338 690766943 1381533886