1821983094 has 24 divisors (see below), whose sum is σ = 3953436552. Its totient is φ = 606434400.

The previous prime is 1821983089. The next prime is 1821983099. The reversal of 1821983094 is 4903891281.

It is an interprime number because it is at equal distance from previous prime (1821983089) and next prime (1821983099).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1821983099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61807 + ... + 86394.

It is an arithmetic number, because the mean of its divisors is an integer number (164726523).

Almost surely, 2^1821983094 is an apocalyptic number.

1821983094 is an abundant number, since it is smaller than the sum of its proper divisors (2131453458).

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

1821983094 is a wasteful number, since it uses less digits than its factorization.

1821983094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148892 (or 148889 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1821983094 is about 42684.6939077698. The cubic root of 1821983094 is about 1221.3724351694.

The spelling of 1821983094 in words is "one billion, eight hundred twenty-one million, nine hundred eighty-three thousand, ninety-four".