1048405385 has 16 divisors (see below), whose sum is σ = 1332911376. Its totient is φ = 788901888.

The previous prime is 1048405381. The next prime is 1048405409. The reversal of 1048405385 is 5835048401.

It can be written as a sum of positive squares in 8 ways, for example, as 41422096 + 1006983289 = 6436^2 + 31733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1048405385 - 2² = 1048405381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1048405381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197729 + ... + 202961.

It is an arithmetic number, because the mean of its divisors is an integer number (83306961).

Almost surely, 2^1048405385 is an apocalyptic number.

It is an amenable number.

1048405385 is a deficient number, since it is larger than the sum of its proper divisors (284505991).

1048405385 is a wasteful number, since it uses less digits than its factorization.

1048405385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7612.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 1048405385 is about 32379.0886993442. The cubic root of 1048405385 is about 1015.8815688649.

The spelling of 1048405385 in words is "one billion, forty-eight million, four hundred five thousand, three hundred eighty-five".