1821194030 has 8 divisors (see below), whose sum is σ = 3278149272. Its totient is φ = 728477608.

The previous prime is 1821194021. The next prime is 1821194033. The reversal of 1821194030 is 304911281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1821193984 and 1821194002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1821194033) 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 3 ways as a sum of consecutive naturals, for example, 91059692 + ... + 91059711.

It is an arithmetic number, because the mean of its divisors is an integer number (409768659).

Almost surely, 2^1821194030 is an apocalyptic number.

1821194030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1821194030 is a deficient number, since it is larger than the sum of its proper divisors (1456955242).

1821194030 is a wasteful number, since it uses less digits than its factorization.

1821194030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182119410.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1821194030 is about 42675.4499683366. The cubic root of 1821194030 is about 1221.1960924833.

The spelling of 1821194030 in words is "one billion, eight hundred twenty-one million, one hundred ninety-four thousand, thirty".