1094858820 has 216 divisors, whose sum is σ = 3866472792. Its totient is φ = 249722880.

The previous prime is 1094858813. The next prime is 1094858839. The reversal of 1094858820 is 288584901.

It is a happy number.

1094858820 is a `hidden beast` number, since 1 + 0 + 9 + 48 + 588 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 95413824 + 999444996 = 9768^2 + 31614^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 368782 + ... + 371738.

It is an arithmetic number, because the mean of its divisors is an integer number (17900337).

Almost surely, 2^1094858820 is an apocalyptic number.

1094858820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1094858820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1933236396).

1094858820 is an abundant number, since it is smaller than the sum of its proper divisors (2771613972).

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

1094858820 is a wasteful number, since it uses less digits than its factorization.

1094858820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011 (or 2995 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 1094858820 is about 33088.6509244484. The cubic root of 1094858820 is about 1030.6693798240.

The spelling of 1094858820 in words is "one billion, ninety-four million, eight hundred fifty-eight thousand, eight hundred twenty".