1605304495 has 4 divisors (see below), whose sum is σ = 1926365400. Its totient is φ = 1284243592.

The previous prime is 1605304469. The next prime is 1605304517. The reversal of 1605304495 is 5944035061.

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

It is a cyclic number.

It is not a de Polignac number, because 1605304495 - 2¹⁵ = 1605271727 is a prime.

It is a zygodrome in base 4.

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, 160530445 + ... + 160530454.

It is an arithmetic number, because the mean of its divisors is an integer number (481591350).

Almost surely, 2^1605304495 is an apocalyptic number.

1605304495 is a deficient number, since it is larger than the sum of its proper divisors (321060905).

1605304495 is an equidigital number, since it uses as much as digits as its factorization.

1605304495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321060904.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 1605304495 is about 40066.2513220291. The cubic root of 1605304495 is about 1170.8982059801.

It can be divided in two parts, 160530 and 4495, that added together give a triangular number (165025 = T₅₇₄).

The spelling of 1605304495 in words is "one billion, six hundred five million, three hundred four thousand, four hundred ninety-five".