1061831890 has 32 divisors (see below), whose sum is σ = 2212001280. Its totient is φ = 359446464.

The previous prime is 1061831873. The next prime is 1061831921. The reversal of 1061831890 is 981381601.

1061831890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1061831890² = 2254973925241944200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90477 + ... + 101536.

It is an arithmetic number, because the mean of its divisors is an integer number (69125040).

Almost surely, 2^1061831890 is an apocalyptic number.

1061831890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1061831890 is an abundant number, since it is smaller than the sum of its proper divisors (1150169390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1061831890 is a wasteful number, since it uses less digits than its factorization.

1061831890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192106.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 1061831890 is about 32585.7620748694. The cubic root of 1061831890 is about 1020.1998487047.

The spelling of 1061831890 in words is "one billion, sixty-one million, eight hundred thirty-one thousand, eight hundred ninety".