1080890890 has 16 divisors (see below), whose sum is σ = 1964868840. Its totient is φ = 428075200.

The previous prime is 1080890873. The next prime is 1080890891. The reversal of 1080890890 is 980980801.

It can be written as a sum of positive squares in 4 ways, for example, as 774675889 + 306215001 = 27833^2 + 17499^2 .

It is not an unprimeable number, because it can be changed into a prime (1080890891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534085 + ... + 536104.

Almost surely, 2^1080890890 is an apocalyptic number.

1080890890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1080890890 is a deficient number, since it is larger than the sum of its proper divisors (883977950).

1080890890 is a wasteful number, since it uses less digits than its factorization.

1080890890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070297.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 1080890890 is about 32876.9051159016. The cubic root of 1080890890 is about 1026.2676016689.

The spelling of 1080890890 in words is "one billion, eighty million, eight hundred ninety thousand, eight hundred ninety".