1852221819 has 8 divisors (see below), whose sum is σ = 2822433280. Its totient is φ = 1058412456.

The previous prime is 1852221817. The next prime is 1852221841. The reversal of 1852221819 is 9181222581.

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

It is not a de Polignac number, because 1852221819 - 2¹ = 1852221817 is a prime.

It is a super-2 number, since 2×1852221819² = 6861451333559337522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1852221817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44100499 + ... + 44100540.

It is an arithmetic number, because the mean of its divisors is an integer number (352804160).

Almost surely, 2^1852221819 is an apocalyptic number.

1852221819 is a deficient number, since it is larger than the sum of its proper divisors (970211461).

1852221819 is an equidigital number, since it uses as much as digits as its factorization.

1852221819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88201049.

The product of its digits is 23040, while the sum is 39.

The square root of 1852221819 is about 43037.4467063277. The cubic root of 1852221819 is about 1228.0922723391.

The spelling of 1852221819 in words is "one billion, eight hundred fifty-two million, two hundred twenty-one thousand, eight hundred nineteen".