1653470641 has 4 divisors (see below), whose sum is σ = 1710486900. Its totient is φ = 1596454384.

The previous prime is 1653470629. The next prime is 1653470671. The reversal of 1653470641 is 1460743561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1460743561 = 89 ⋅16412849.

It can be written as a sum of positive squares in 2 ways, for example, as 454926241 + 1198544400 = 21329^2 + 34620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1653470641 - 2²⁷ = 1519252913 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 1653470641.

It is not an unprimeable number, because it can be changed into a prime (1653470671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28508086 + ... + 28508143.

It is an arithmetic number, because the mean of its divisors is an integer number (427621725).

Almost surely, 2^1653470641 is an apocalyptic number.

It is an amenable number.

1653470641 is a deficient number, since it is larger than the sum of its proper divisors (57016259).

1653470641 is an equidigital number, since it uses as much as digits as its factorization.

1653470641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57016258.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1653470641 is about 40662.8902194618. The cubic root of 1653470641 is about 1182.4936828892.

The spelling of 1653470641 in words is "one billion, six hundred fifty-three million, four hundred seventy thousand, six hundred forty-one".