1438015345 has 32 divisors (see below), whose sum is σ = 1939793184. Its totient is φ = 1016371200.

The previous prime is 1438015343. The next prime is 1438015349. The reversal of 1438015345 is 5435108341.

It can be written as a sum of positive squares in 16 ways, for example, as 707772816 + 730242529 = 26604^2 + 27023^2 .

It is not a de Polignac number, because 1438015345 - 2¹ = 1438015343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1438015345.

It is not an unprimeable number, because it can be changed into a prime (1438015343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136155 + ... + 146335.

It is an arithmetic number, because the mean of its divisors is an integer number (60618537).

Almost surely, 2^1438015345 is an apocalyptic number.

It is an amenable number.

1438015345 is a deficient number, since it is larger than the sum of its proper divisors (501777839).

1438015345 is a wasteful number, since it uses less digits than its factorization.

1438015345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10293.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1438015345 is about 37921.1727798601. The cubic root of 1438015345 is about 1128.7242095106.

The spelling of 1438015345 in words is "one billion, four hundred thirty-eight million, fifteen thousand, three hundred forty-five".