19436542224 has 160 divisors (see below), whose sum is σ = 56623387776. Its totient is φ = 5693276160.

The previous prime is 19436542199. The next prime is 19436542267. The reversal of 19436542224 is 42224563491.

It is a Cunningham number, because it is equal to 139415²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3063984 + ... + 3070320.

Almost surely, 2^19436542224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19436542224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28311693888).

19436542224 is an abundant number, since it is smaller than the sum of its proper divisors (37186845552).

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

19436542224 is a wasteful number, since it uses less digits than its factorization.

19436542224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6553 (or 6547 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The spelling of 19436542224 in words is "nineteen billion, four hundred thirty-six million, five hundred forty-two thousand, two hundred twenty-four".