22019357918 has 8 divisors (see below), whose sum is σ = 33030932880. Its totient is φ = 11009046960.

The previous prime is 22019357873. The next prime is 22019357957. The reversal of 22019357918 is 81975391022.

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, 271178 + ... + 342893.

It is an arithmetic number, because the mean of its divisors is an integer number (4128866610).

Almost surely, 2^22019357918 is an apocalyptic number.

22019357918 is a deficient number, since it is larger than the sum of its proper divisors (11011574962).

22019357918 is a wasteful number, since it uses less digits than its factorization.

22019357918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632002.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 22019357918 in words is "twenty-two billion, nineteen million, three hundred fifty-seven thousand, nine hundred eighteen".