1653612053 has 4 divisors (see below), whose sum is σ = 1654649100. Its totient is φ = 1652575008.

The previous prime is 1653612043. The next prime is 1653612067. The reversal of 1653612053 is 3502163561.

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 131285764 + 1522326289 = 11458^2 + 39017^2 .

It is a cyclic number.

It is not a de Polignac number, because 1653612053 - 2²⁰ = 1652563477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1653612043) 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, 516128 + ... + 519321.

It is an arithmetic number, because the mean of its divisors is an integer number (413662275).

Almost surely, 2^1653612053 is an apocalyptic number.

It is an amenable number.

1653612053 is a deficient number, since it is larger than the sum of its proper divisors (1037047).

1653612053 is a wasteful number, since it uses less digits than its factorization.

1653612053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037046.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 1653612053 is about 40664.6290158905. The cubic root of 1653612053 is about 1182.5273925956.

The spelling of 1653612053 in words is "one billion, six hundred fifty-three million, six hundred twelve thousand, fifty-three".