219001890492 has 144 divisors (see below), whose sum is σ = 692939729664. Its totient is φ = 56656800000.

The previous prime is 219001890469. The next prime is 219001890493. The reversal of 219001890492 is 294098100912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219001890493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 538392 + ... + 853152.

It is an arithmetic number, because the mean of its divisors is an integer number (4812081456).

Almost surely, 2^219001890492 is an apocalyptic number.

219001890492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219001890492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346469864832).

219001890492 is an abundant number, since it is smaller than the sum of its proper divisors (473937839172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

219001890492 is a wasteful number, since it uses less digits than its factorization.

219001890492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315040 (or 315035 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 219001890492 in words is "two hundred nineteen billion, one million, eight hundred ninety thousand, four hundred ninety-two".