19422541220 has 12 divisors (see below), whose sum is σ = 40787336604. Its totient is φ = 7769016480.

The previous prime is 19422541217. The next prime is 19422541223. The reversal of 19422541220 is 2214522491.

It is an interprime number because it is at equal distance from previous prime (19422541217) and next prime (19422541223).

It can be written as a sum of positive squares in 2 ways, for example, as 10622600356 + 8799940864 = 103066^2 + 93808^2 .

It is not an unprimeable number, because it can be changed into a prime (19422541223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485563511 + ... + 485563550.

It is an arithmetic number, because the mean of its divisors is an integer number (3398944717).

Almost surely, 2^19422541220 is an apocalyptic number.

19422541220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19422541220 is an abundant number, since it is smaller than the sum of its proper divisors (21364795384).

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

19422541220 is a wasteful number, since it uses less digits than its factorization.

19422541220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971127070 (or 971127068 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 19422541220 in words is "nineteen billion, four hundred twenty-two million, five hundred forty-one thousand, two hundred twenty".