1061641489 has 2 divisors, whose sum is σ = 1061641490. Its totient is φ = 1061641488.

The previous prime is 1061641411. The next prime is 1061641501. The reversal of 1061641489 is 9841461601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 980190864 + 81450625 = 31308^2 + 9025^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061641489 - 2²¹ = 1059544337 is a prime.

It is a super-2 number, since 2×1061641489² = 2254165302332274242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1061641289) 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, 530820744 + 530820745.

It is an arithmetic number, because the mean of its divisors is an integer number (530820745).

Almost surely, 2^1061641489 is an apocalyptic number.

It is an amenable number.

1061641489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061641489 is an equidigital number, since it uses as much as digits as its factorization.

1061641489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 1061641489 is about 32582.8404071837. The cubic root of 1061641489 is about 1020.1388664580.

The spelling of 1061641489 in words is "one billion, sixty-one million, six hundred forty-one thousand, four hundred eighty-nine".