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1448030809 = 380532
BaseRepresentation
bin101011001001111…
…0011001001011001
310201220201120211201
41112103303021121
510431143441214
6355404154201
750612026111
oct12623631131
93656646751
101448030809
11683414a85
12344b38961
131a0cc7784
14da456041
15871d1274
hex564f3259

1448030809 has 3 divisors (see below), whose sum is σ = 1448068863. Its totient is φ = 1447992756.

The previous prime is 1448030807. The next prime is 1448030819. The reversal of 1448030809 is 9080308441.

The square root of 1448030809 is 38053.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 605406025 + 842624784 = 24605^2 + 29028^2 .

It is not a de Polignac number, because 1448030809 - 21 = 1448030807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1448030807) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 19027 + ... + 57079.

It is an arithmetic number, because the mean of its divisors is an integer number (482689621).

Almost surely, 21448030809 is an apocalyptic number.

1448030809 is the 38053-rd square number.

1448030809 is the 19027-th centered octagonal number.

It is an amenable number.

1448030809 is a deficient number, since it is larger than the sum of its proper divisors (38054).

1448030809 is an frugal number, since it uses more digits than its factorization.

1448030809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76106 (or 38053 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The cubic root of 1448030809 is about 1131.3385888562.

The spelling of 1448030809 in words is "one billion, four hundred forty-eight million, thirty thousand, eight hundred nine".

Divisors: 1 38053 1448030809