Search a number
-
+
1368512069 = 19154946499
BaseRepresentation
bin101000110010001…
…1101011001000101
310112101002121122012
41101210131121011
510300314341234
6343443544005
745625106051
oct12144353105
93471077565
101368512069
11642542411
1232238b005
1318a6a5472
14cda76c61
15802250ce
hex5191d645

1368512069 has 8 divisors (see below), whose sum is σ = 1441500000. Its totient is φ = 1295620272.

The previous prime is 1368512027. The next prime is 1368512071. The reversal of 1368512069 is 9602158631.

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 1368512069 - 216 = 1368446533 is a prime.

It is a super-2 number, since 2×13685120692 = 3745650565997321522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368512669) 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, 6182 + ... + 52680.

It is an arithmetic number, because the mean of its divisors is an integer number (180187500).

Almost surely, 21368512069 is an apocalyptic number.

1368512069 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1368512069 is a deficient number, since it is larger than the sum of its proper divisors (72987931).

1368512069 is a wasteful number, since it uses less digits than its factorization.

1368512069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48067.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1368512069 is about 36993.4057502145. The cubic root of 1368512069 is about 1110.2383139529.

The spelling of 1368512069 in words is "one billion, three hundred sixty-eight million, five hundred twelve thousand, sixty-nine".

Divisors: 1 19 1549 29431 46499 883481 72026951 1368512069