1653328469 has 4 divisors (see below), whose sum is σ = 1780507596. Its totient is φ = 1526149344.

The previous prime is 1653328433. The next prime is 1653328471. The reversal of 1653328469 is 9648233561.

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 429028369 + 1224300100 = 20713^2 + 34990^2 .

It is a cyclic number.

It is not a de Polignac number, because 1653328469 - 2²⁴ = 1636551253 is a prime.

It is a super-2 number, since 2×1653328469² = 5466990052811767922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1653328409) 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, 63589544 + ... + 63589569.

It is an arithmetic number, because the mean of its divisors is an integer number (445126899).

Almost surely, 2^1653328469 is an apocalyptic number.

It is an amenable number.

1653328469 is a deficient number, since it is larger than the sum of its proper divisors (127179127).

1653328469 is a wasteful number, since it uses less digits than its factorization.

1653328469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127179126.

The product of its digits is 933120, while the sum is 47.

The square root of 1653328469 is about 40661.1420031460. The cubic root of 1653328469 is about 1182.4597900768.

The spelling of 1653328469 in words is "one billion, six hundred fifty-three million, three hundred twenty-eight thousand, four hundred sixty-nine".