1821134348 has 24 divisors (see below), whose sum is σ = 3510474240. Its totient is φ = 819749520.

The previous prime is 1821134347. The next prime is 1821134353. The reversal of 1821134348 is 8434311281.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1821134347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196388 + ... + 205451.

It is an arithmetic number, because the mean of its divisors is an integer number (146269760).

Almost surely, 2^1821134348 is an apocalyptic number.

It is an amenable number.

1821134348 is a deficient number, since it is larger than the sum of its proper divisors (1689339892).

1821134348 is a wasteful number, since it uses less digits than its factorization.

1821134348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401957 (or 401955 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 1821134348 is about 42674.7507081178. The cubic root of 1821134348 is about 1221.1827524767.

The spelling of 1821134348 in words is "one billion, eight hundred twenty-one million, one hundred thirty-four thousand, three hundred forty-eight".