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1379144551 = 13112498429
BaseRepresentation
bin101001000110100…
…0001001101100111
310120010002210122211
41102031001031213
510311030111201
6344503504251
746114351411
oct12215011547
93503083584
101379144551
11648544794
12325a58087
1318c958b85
14d12439b1
1581125651
hex52341367

1379144551 has 8 divisors (see below), whose sum is σ = 1390950000. Its totient is φ = 1367358720.

The previous prime is 1379144539. The next prime is 1379144581. The reversal of 1379144551 is 1554419731.

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

It is a cyclic number.

It is not a de Polignac number, because 1379144551 - 219 = 1378620263 is a prime.

It is a super-3 number, since 3×13791445513 (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379144521) 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, 159405 + ... + 167833.

It is an arithmetic number, because the mean of its divisors is an integer number (173868750).

Almost surely, 21379144551 is an apocalyptic number.

1379144551 is a deficient number, since it is larger than the sum of its proper divisors (11805449).

1379144551 is a wasteful number, since it uses less digits than its factorization.

1379144551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9809.

The product of its digits is 75600, while the sum is 40.

The square root of 1379144551 is about 37136.8355006185. The cubic root of 1379144551 is about 1113.1061850785.

The spelling of 1379144551 in words is "one billion, three hundred seventy-nine million, one hundred forty-four thousand, five hundred fifty-one".

Divisors: 1 131 1249 8429 163619 1104199 10527821 1379144551