Search a number
-
+
1344518407 = 6472078081
BaseRepresentation
bin101000000100011…
…1011100100000111
310110200221121112001
41100020323210013
510223144042112
6341225410131
745214134511
oct12010734407
93420847461
101344518407
1162aa44641
12316339947
1318572432b
14ca7ccbb1
157d085c57
hex5023b907

1344518407 has 4 divisors (see below), whose sum is σ = 1346597136. Its totient is φ = 1342439680.

The previous prime is 1344518401. The next prime is 1344518419. The reversal of 1344518407 is 7048154431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7048154431 = 23306441497.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1344518407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344518401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038394 + ... + 1039687.

It is an arithmetic number, because the mean of its divisors is an integer number (336649284).

Almost surely, 21344518407 is an apocalyptic number.

1344518407 is a deficient number, since it is larger than the sum of its proper divisors (2078729).

1344518407 is an equidigital number, since it uses as much as digits as its factorization.

1344518407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078728.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 1344518407 is about 36667.6752330987. The cubic root of 1344518407 is about 1103.7115417582.

The spelling of 1344518407 in words is "one billion, three hundred forty-four million, five hundred eighteen thousand, four hundred seven".

Divisors: 1 647 2078081 1344518407