1573148789 has 2 divisors, whose sum is σ = 1573148790. Its totient is φ = 1573148788.

The previous prime is 1573148749. The next prime is 1573148807. The reversal of 1573148789 is 9878413751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1563569764 + 9579025 = 39542^2 + 3095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1573148789 - 2²⁰ = 1572100213 is a prime.

It is a super-2 number, since 2×1573148789² = 4949594224664333042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1573148789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1573148729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786574394 + 786574395.

It is an arithmetic number, because the mean of its divisors is an integer number (786574395).

Almost surely, 2^1573148789 is an apocalyptic number.

It is an amenable number.

1573148789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1573148789 is an equidigital number, since it uses as much as digits as its factorization.

1573148789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 53.

The square root of 1573148789 is about 39662.9397422833. The cubic root of 1573148789 is about 1163.0273650580.

The spelling of 1573148789 in words is "one billion, five hundred seventy-three million, one hundred forty-eight thousand, seven hundred eighty-nine".