1545531653 has 2 divisors, whose sum is σ = 1545531654. Its totient is φ = 1545531652.

The previous prime is 1545531587. The next prime is 1545531683. The reversal of 1545531653 is 3561355451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 952463044 + 593068609 = 30862^2 + 24353^2 .

It is a cyclic number.

It is not a de Polignac number, because 1545531653 - 2¹⁴ = 1545515269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1545531683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772765826 + 772765827.

It is an arithmetic number, because the mean of its divisors is an integer number (772765827).

Almost surely, 2^1545531653 is an apocalyptic number.

It is an amenable number.

1545531653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545531653 is an equidigital number, since it uses as much as digits as its factorization.

1545531653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135000, while the sum is 38.

The square root of 1545531653 is about 39313.2503489600. The cubic root of 1545531653 is about 1156.1813722774.

The spelling of 1545531653 in words is "one billion, five hundred forty-five million, five hundred thirty-one thousand, six hundred fifty-three".