1652654809 has 4 divisors (see below), whose sum is σ = 1779782116. Its totient is φ = 1525527504.

The previous prime is 1652654803. The next prime is 1652654821. The reversal of 1652654809 is 9084562561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9084562561 = 17 ⋅534386033.

It can be written as a sum of positive squares in 2 ways, for example, as 190357209 + 1462297600 = 13797^2 + 38240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1652654809 - 2²⁵ = 1619100377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1652654803) 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, 63563634 + ... + 63563659.

It is an arithmetic number, because the mean of its divisors is an integer number (444945529).

Almost surely, 2^1652654809 is an apocalyptic number.

It is an amenable number.

1652654809 is a deficient number, since it is larger than the sum of its proper divisors (127127307).

1652654809 is a wasteful number, since it uses less digits than its factorization.

1652654809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127127306.

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 1652654809 is about 40652.8573288521. The cubic root of 1652654809 is about 1182.2991678146.

The spelling of 1652654809 in words is "one billion, six hundred fifty-two million, six hundred fifty-four thousand, eight hundred nine".