1520303137 has 2 divisors, whose sum is σ = 1520303138. Its totient is φ = 1520303136.

The previous prime is 1520303123. The next prime is 1520303177. The reversal of 1520303137 is 7313030251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 844251136 + 676052001 = 29056^2 + 26001^2 .

It is a cyclic number.

It is not a de Polignac number, because 1520303137 - 2⁷ = 1520303009 is a prime.

It is a super-2 number, since 2×1520303137² = 4622643256744081538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1520303117) 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, 760151568 + 760151569.

It is an arithmetic number, because the mean of its divisors is an integer number (760151569).

Almost surely, 2^1520303137 is an apocalyptic number.

It is an amenable number.

1520303137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520303137 is an equidigital number, since it uses as much as digits as its factorization.

1520303137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 1520303137 is about 38991.0648354209. The cubic root of 1520303137 is about 1149.8558450686.

Adding to 1520303137 its reverse (7313030251), we get a palindrome (8833333388).

The spelling of 1520303137 in words is "one billion, five hundred twenty million, three hundred three thousand, one hundred thirty-seven".