1536121537 has 2 divisors, whose sum is σ = 1536121538. Its totient is φ = 1536121536.

The previous prime is 1536121427. The next prime is 1536121603. The reversal of 1536121537 is 7351216351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1505750416 + 30371121 = 38804^2 + 5511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1536121537 - 2⁷ = 1536121409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1536121837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 768060768 + 768060769.

It is an arithmetic number, because the mean of its divisors is an integer number (768060769).

Almost surely, 2^1536121537 is an apocalyptic number.

It is an amenable number.

1536121537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1536121537 is an equidigital number, since it uses as much as digits as its factorization.

1536121537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 1536121537 is about 39193.3863936251. The cubic root of 1536121537 is about 1153.8300871596.

Adding to 1536121537 its reverse (7351216351), we get a palindrome (8887337888).

The spelling of 1536121537 in words is "one billion, five hundred thirty-six million, one hundred twenty-one thousand, five hundred thirty-seven".