1061651659 has 4 divisors (see below), whose sum is σ = 1061891416. Its totient is φ = 1061411904.

The previous prime is 1061651627. The next prime is 1061651737. The reversal of 1061651659 is 9561561601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9561561601 = 31 ⋅308437471.

It is a cyclic number.

It is not a de Polignac number, because 1061651659 - 2⁵ = 1061651627 is a prime.

It is a super-2 number, since 2×1061651659² = 2254208490114904562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061651359) 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 in 3 ways as a sum of consecutive naturals, for example, 113109 + ... + 122134.

It is an arithmetic number, because the mean of its divisors is an integer number (265472854).

Almost surely, 2^1061651659 is an apocalyptic number.

1061651659 is a deficient number, since it is larger than the sum of its proper divisors (239757).

1061651659 is an equidigital number, since it uses as much as digits as its factorization.

1061651659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239756.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 1061651659 is about 32582.9964705519. The cubic root of 1061651659 is about 1020.1421239227.

The spelling of 1061651659 in words is "one billion, sixty-one million, six hundred fifty-one thousand, six hundred fifty-nine".