1194796890 has 144 divisors (see below), whose sum is σ = 3826458792. Its totient is φ = 257015808.

The previous prime is 1194796849. The next prime is 1194796901. The reversal of 1194796890 is 986974911.

It can be written as a sum of positive squares in 4 ways, for example, as 1141696521 + 53100369 = 33789^2 + 7287^2 .

It is a Curzon number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 67002 + ... + 82938.

Almost surely, 2^1194796890 is an apocalyptic number.

1194796890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1194796890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1913229396).

1194796890 is an abundant number, since it is smaller than the sum of its proper divisors (2631661902).

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

1194796890 is a wasteful number, since it uses less digits than its factorization.

1194796890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15981 (or 15971 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 1194796890 is about 34565.8341429800. The cubic root of 1194796890 is about 1061.1204747297.

The spelling of 1194796890 in words is "one billion, one hundred ninety-four million, seven hundred ninety-six thousand, eight hundred ninety".