1530157949 has 2 divisors, whose sum is σ = 1530157950. Its totient is φ = 1530157948.

The previous prime is 1530157939. The next prime is 1530157957. The reversal of 1530157949 is 9497510351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1529983225 + 174724 = 39115^2 + 418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1530157949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1530157939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765078974 + 765078975.

It is an arithmetic number, because the mean of its divisors is an integer number (765078975).

Almost surely, 2^1530157949 is an apocalyptic number.

It is an amenable number.

1530157949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530157949 is an equidigital number, since it uses as much as digits as its factorization.

1530157949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 44.

The square root of 1530157949 is about 39117.2334016607. The cubic root of 1530157949 is about 1152.3350034122.

The spelling of 1530157949 in words is "one billion, five hundred thirty million, one hundred fifty-seven thousand, nine hundred forty-nine".