1061646115 has 4 divisors (see below), whose sum is σ = 1273975344. Its totient is φ = 849316888.

The previous prime is 1061646077. The next prime is 1061646137. The reversal of 1061646115 is 5116461601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5116461601 = 4177 ⋅1224913.

It is a cyclic number.

It is not a de Polignac number, because 1061646115 - 2¹³ = 1061637923 is a prime.

It is a super-2 number, since 2×1061646115² = 2254184946989186450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106164607 + ... + 106164616.

It is an arithmetic number, because the mean of its divisors is an integer number (318493836).

Almost surely, 2^1061646115 is an apocalyptic number.

1061646115 is a deficient number, since it is larger than the sum of its proper divisors (212329229).

1061646115 is an equidigital number, since it uses as much as digits as its factorization.

1061646115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212329228.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1061646115 is about 32582.9113953925. The cubic root of 1061646115 is about 1020.1403481746.

The spelling of 1061646115 in words is "one billion, sixty-one million, six hundred forty-six thousand, one hundred fifteen".