1881214546 has 8 divisors (see below), whose sum is σ = 2822831280. Its totient is φ = 940270788.

The previous prime is 1881214519. The next prime is 1881214547. The reversal of 1881214546 is 6454121881.

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

It is a super-2 number, since 2×1881214546² = 7077936336163972232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1881214499 and 1881214508.

It is not an unprimeable number, because it can be changed into a prime (1881214547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161196 + ... + 172471.

It is an arithmetic number, because the mean of its divisors is an integer number (352853910).

Almost surely, 2^1881214546 is an apocalyptic number.

1881214546 is a deficient number, since it is larger than the sum of its proper divisors (941616734).

1881214546 is a wasteful number, since it uses less digits than its factorization.

1881214546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336488.

The product of its digits is 61440, while the sum is 40.

The square root of 1881214546 is about 43372.9702234007. The cubic root of 1881214546 is about 1234.4668804339.

The spelling of 1881214546 in words is "one billion, eight hundred eighty-one million, two hundred fourteen thousand, five hundred forty-six".