1512273649 has 2 divisors, whose sum is σ = 1512273650. Its totient is φ = 1512273648.

The previous prime is 1512273619. The next prime is 1512273661. The reversal of 1512273649 is 9463722151.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1076299249 + 435974400 = 32807^2 + 20880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1512273649 - 2¹⁵ = 1512240881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1512273619) 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, 756136824 + 756136825.

It is an arithmetic number, because the mean of its divisors is an integer number (756136825).

Almost surely, 2^1512273649 is an apocalyptic number.

It is an amenable number.

1512273649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1512273649 is an equidigital number, since it uses as much as digits as its factorization.

1512273649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 1512273649 is about 38887.9627777028. The cubic root of 1512273649 is about 1147.8279477756.

The spelling of 1512273649 in words is "one billion, five hundred twelve million, two hundred seventy-three thousand, six hundred forty-nine".