1605455485 has 4 divisors (see below), whose sum is σ = 1926546588. Its totient is φ = 1284364384.

The previous prime is 1605455473. The next prime is 1605455513. The reversal of 1605455485 is 5845545061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 976750009 + 628705476 = 31253^2 + 25074^2 .

It is a cyclic number.

It is not a de Polignac number, because 1605455485 - 2¹³ = 1605447293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160545544 + ... + 160545553.

It is an arithmetic number, because the mean of its divisors is an integer number (481636647).

Almost surely, 2^1605455485 is an apocalyptic number.

It is an amenable number.

1605455485 is a deficient number, since it is larger than the sum of its proper divisors (321091103).

1605455485 is an equidigital number, since it uses as much as digits as its factorization.

1605455485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321091102.

The product of its (nonzero) digits is 480000, while the sum is 43.

The square root of 1605455485 is about 40068.1355318662. The cubic root of 1605455485 is about 1170.9349151897.

The spelling of 1605455485 in words is "one billion, six hundred five million, four hundred fifty-five thousand, four hundred eighty-five".