1015231649 has 2 divisors, whose sum is σ = 1015231650. Its totient is φ = 1015231648.

The previous prime is 1015231583. The next prime is 1015231667. The reversal of 1015231649 is 9461325101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 964537249 + 50694400 = 31057^2 + 7120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1015231649 - 2¹² = 1015227553 is a prime.

It is a super-2 number, since 2×1015231649² = 2061390602262518402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1015233649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507615824 + 507615825.

It is an arithmetic number, because the mean of its divisors is an integer number (507615825).

Almost surely, 2^1015231649 is an apocalyptic number.

It is an amenable number.

1015231649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1015231649 is an equidigital number, since it uses as much as digits as its factorization.

1015231649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1015231649 is about 31862.6999640646. The cubic root of 1015231649 is about 1005.0516541523.

The spelling of 1015231649 in words is "one billion, fifteen million, two hundred thirty-one thousand, six hundred forty-nine".