1653029965 has 4 divisors (see below), whose sum is σ = 1983635964. Its totient is φ = 1322423968.

The previous prime is 1653029953. The next prime is 1653029971. The reversal of 1653029965 is 5699203561.

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 470976804 + 1182053161 = 21702^2 + 34381^2 .

It is a cyclic number.

It is not a de Polignac number, because 1653029965 - 2⁷ = 1653029837 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, 165302992 + ... + 165303001.

It is an arithmetic number, because the mean of its divisors is an integer number (495908991).

Almost surely, 2^1653029965 is an apocalyptic number.

It is an amenable number.

1653029965 is a deficient number, since it is larger than the sum of its proper divisors (330605999).

1653029965 is an equidigital number, since it uses as much as digits as its factorization.

1653029965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330605998.

The product of its (nonzero) digits is 437400, while the sum is 46.

The square root of 1653029965 is about 40657.4712076391. The cubic root of 1653029965 is about 1182.3886224840.

The spelling of 1653029965 in words is "one billion, six hundred fifty-three million, twenty-nine thousand, nine hundred sixty-five".