1653145733 has 4 divisors (see below), whose sum is σ = 1660364940. Its totient is φ = 1645926528.

The previous prime is 1653145717. The next prime is 1653145763. The reversal of 1653145733 is 3375413561.

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 788374084 + 864771649 = 28078^2 + 29407^2 .

It is a cyclic number.

It is not a de Polignac number, because 1653145733 - 2⁴ = 1653145717 is a prime.

It is a super-2 number, since 2×1653145733² = 5465781629072214578, 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 (1653145763) 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, 3609260 + ... + 3609717.

It is an arithmetic number, because the mean of its divisors is an integer number (415091235).

Almost surely, 2^1653145733 is an apocalyptic number.

It is an amenable number.

1653145733 is a deficient number, since it is larger than the sum of its proper divisors (7219207).

1653145733 is an equidigital number, since it uses as much as digits as its factorization.

1653145733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7219206.

The product of its digits is 113400, while the sum is 38.

The square root of 1653145733 is about 40658.8948816861. The cubic root of 1653145733 is about 1182.4162242363.

The spelling of 1653145733 in words is "one billion, six hundred fifty-three million, one hundred forty-five thousand, seven hundred thirty-three".