1020530149 has 2 divisors, whose sum is σ = 1020530150. Its totient is φ = 1020530148.

The previous prime is 1020530143. The next prime is 1020530167. The reversal of 1020530149 is 9410350201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 916999524 + 103530625 = 30282^2 + 10175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020530149 - 2³ = 1020530141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020530141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510265074 + 510265075.

It is an arithmetic number, because the mean of its divisors is an integer number (510265075).

Almost surely, 2^1020530149 is an apocalyptic number.

It is an amenable number.

1020530149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020530149 is an equidigital number, since it uses as much as digits as its factorization.

1020530149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1020530149 is about 31945.7375717012. The cubic root of 1020530149 is about 1006.7970780543.

The spelling of 1020530149 in words is "one billion, twenty million, five hundred thirty thousand, one hundred forty-nine".