1610456065 has 4 divisors (see below), whose sum is σ = 1932547284. Its totient is φ = 1288364848.

The previous prime is 1610456047. The next prime is 1610456069. The reversal of 1610456065 is 5606540161.

It is a happy number.

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 735006321 + 875449744 = 27111^2 + 29588^2 .

It is a cyclic number.

It is not a de Polignac number, because 1610456065 - 2⁵ = 1610456033 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 1610456065.

It is not an unprimeable number, because it can be changed into a prime (1610456069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161045602 + ... + 161045611.

It is an arithmetic number, because the mean of its divisors is an integer number (483136821).

Almost surely, 2^1610456065 is an apocalyptic number.

It is an amenable number.

1610456065 is a deficient number, since it is larger than the sum of its proper divisors (322091219).

1610456065 is an equidigital number, since it uses as much as digits as its factorization.

1610456065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322091218.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1610456065 is about 40130.4879736093. The cubic root of 1610456065 is about 1172.1493752947.

The spelling of 1610456065 in words is "one billion, six hundred ten million, four hundred fifty-six thousand, sixty-five".