1653576493 has 2 divisors, whose sum is σ = 1653576494. Its totient is φ = 1653576492.

The previous prime is 1653576367. The next prime is 1653576541. The reversal of 1653576493 is 3946753561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1261457289 + 392119204 = 35517^2 + 19802^2 .

It is a cyclic number.

It is not a de Polignac number, because 1653576493 - 2⁹ = 1653575981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1653576193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826788246 + 826788247.

It is an arithmetic number, because the mean of its divisors is an integer number (826788247).

Almost surely, 2^1653576493 is an apocalyptic number.

It is an amenable number.

1653576493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1653576493 is an equidigital number, since it uses as much as digits as its factorization.

1653576493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2041200, while the sum is 49.

The square root of 1653576493 is about 40664.1917785169. The cubic root of 1653576493 is about 1182.5189160054.

The spelling of 1653576493 in words is "one billion, six hundred fifty-three million, five hundred seventy-six thousand, four hundred ninety-three".