1061498881 has 4 divisors (see below), whose sum is σ = 1078900564. Its totient is φ = 1044097200.

The previous prime is 1061498873. The next prime is 1061498891. The reversal of 1061498881 is 1888941601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1888941601 = 19 ⋅99417979.

It can be written as a sum of positive squares in 2 ways, for example, as 11155600 + 1050343281 = 3340^2 + 32409^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061498881 - 2³ = 1061498873 is a prime.

It is a super-2 number, since 2×1061498881² = 2253559748728504322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061498891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8700750 + ... + 8700871.

It is an arithmetic number, because the mean of its divisors is an integer number (269725141).

Almost surely, 2^1061498881 is an apocalyptic number.

It is an amenable number.

1061498881 is a deficient number, since it is larger than the sum of its proper divisors (17401683).

1061498881 is an equidigital number, since it uses as much as digits as its factorization.

1061498881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17401682.

The product of its (nonzero) digits is 110592, while the sum is 46.

The square root of 1061498881 is about 32580.6519425256. The cubic root of 1061498881 is about 1020.0931867317.

The spelling of 1061498881 in words is "one billion, sixty-one million, four hundred ninety-eight thousand, eight hundred eighty-one".