219081412 has 24 divisors (see below), whose sum is σ = 422315712. Its totient is φ = 98613600.

The previous prime is 219081407. The next prime is 219081413. The reversal of 219081412 is 214180912.

219081412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (219081413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19639 + ... + 28702.

It is an arithmetic number, because the mean of its divisors is an integer number (17596488).

Almost surely, 2^219081412 is an apocalyptic number.

219081412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

219081412 is a deficient number, since it is larger than the sum of its proper divisors (203234300).

219081412 is a wasteful number, since it uses less digits than its factorization.

219081412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48459 (or 48457 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 219081412 is about 14801.3989879335. The cubic root of 219081412 is about 602.8396982463.

The spelling of 219081412 in words is "two hundred nineteen million, eighty-one thousand, four hundred twelve".