19581020222 has 8 divisors (see below), whose sum is σ = 29372125176. Its totient is φ = 9790311832.

The previous prime is 19581020213. The next prime is 19581020233. The reversal of 19581020222 is 22202018591.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133253 + ... + 238575.

It is an arithmetic number, because the mean of its divisors is an integer number (3671515647).

Almost surely, 2^19581020222 is an apocalyptic number.

19581020222 is a deficient number, since it is larger than the sum of its proper divisors (9791104954).

19581020222 is a wasteful number, since it uses less digits than its factorization.

19581020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198282.

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 19581020222 in words is "nineteen billion, five hundred eighty-one million, twenty thousand, two hundred twenty-two".