1821350001 has 16 divisors (see below), whose sum is σ = 2471382720. Its totient is φ = 1192804800.

The previous prime is 1821349991. The next prime is 1821350009. The reversal of 1821350001 is 1000531281.

1821350001 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1821350001 - 2²³ = 1812961393 is a prime.

It is a super-2 number, since 2×1821350001² = 6634631652285400002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1821350001.

It is not an unprimeable number, because it can be changed into a prime (1821350009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333771 + ... + 339183.

It is an arithmetic number, because the mean of its divisors is an integer number (154461420).

Almost surely, 2^1821350001 is an apocalyptic number.

It is an amenable number.

1821350001 is a deficient number, since it is larger than the sum of its proper divisors (650032719).

1821350001 is a wasteful number, since it uses less digits than its factorization.

1821350001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7376.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1821350001 is about 42677.2773381808. The cubic root of 1821350001 is about 1221.2309534473.

Adding to 1821350001 its reverse (1000531281), we get a palindrome (2821881282).

The spelling of 1821350001 in words is "one billion, eight hundred twenty-one million, three hundred fifty thousand, one".