1438285305 has 64 divisors (see below), whose sum is σ = 2458460160. Its totient is φ = 716787456.

The previous prime is 1438285279. The next prime is 1438285307. The reversal of 1438285305 is 5035828341.

It is not a de Polignac number, because 1438285305 - 2⁵ = 1438285273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1438285307) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2105494 + ... + 2106176.

It is an arithmetic number, because the mean of its divisors is an integer number (38413440).

Almost surely, 2^1438285305 is an apocalyptic number.

1438285305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1438285305 is a deficient number, since it is larger than the sum of its proper divisors (1020174855).

1438285305 is a wasteful number, since it uses less digits than its factorization.

1438285305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 1438285305 is about 37924.7321018883. The cubic root of 1438285305 is about 1128.7948372506.

The spelling of 1438285305 in words is "one billion, four hundred thirty-eight million, two hundred eighty-five thousand, three hundred five".