1061689845 has 32 divisors (see below), whose sum is σ = 1718900352. Its totient is φ = 559530752.

The previous prime is 1061689841. The next prime is 1061689921. The reversal of 1061689845 is 5489861601.

It is a cyclic number.

It is not a de Polignac number, because 1061689845 - 2² = 1061689841 is a prime.

It is a super-2 number, since 2×1061689845² = 2254370653952248050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1061689794 and 1061689803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061689841) 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 31 ways as a sum of consecutive naturals, for example, 1047559 + ... + 1048571.

It is an arithmetic number, because the mean of its divisors is an integer number (53715636).

Almost surely, 2^1061689845 is an apocalyptic number.

1061689845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1061689845 is a deficient number, since it is larger than the sum of its proper divisors (657210507).

1061689845 is a wasteful number, since it uses less digits than its factorization.

1061689845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 1061689845 is about 32583.5824457655. The cubic root of 1061689845 is about 1020.1543547644.

The spelling of 1061689845 in words is "one billion, sixty-one million, six hundred eighty-nine thousand, eight hundred forty-five".