1653242173 has 4 divisors (see below), whose sum is σ = 1803536928. Its totient is φ = 1502947420.

The previous prime is 1653242167. The next prime is 1653242189. The reversal of 1653242173 is 3712423561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1653242173 - 2¹⁷ = 1653111101 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 (1653242273) 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, 75147361 + ... + 75147382.

It is an arithmetic number, because the mean of its divisors is an integer number (450884232).

Almost surely, 2^1653242173 is an apocalyptic number.

It is an amenable number.

1653242173 is a deficient number, since it is larger than the sum of its proper divisors (150294755).

1653242173 is a wasteful number, since it uses less digits than its factorization.

1653242173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150294754.

The product of its digits is 30240, while the sum is 34.

The square root of 1653242173 is about 40660.0808287441. The cubic root of 1653242173 is about 1182.4392167652.

The spelling of 1653242173 in words is "one billion, six hundred fifty-three million, two hundred forty-two thousand, one hundred seventy-three".