19485241440 has 96 divisors (see below), whose sum is σ = 70146881280. Its totient is φ = 4453768704.

The previous prime is 19485241423. The next prime is 19485241459. The reversal of 19485241440 is 4414258491.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 19485241392 and 19485241401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2896230 + ... + 2902949.

It is an arithmetic number, because the mean of its divisors is an integer number (730696680).

Almost surely, 2^19485241440 is an apocalyptic number.

19485241440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19485241440 is an abundant number, since it is smaller than the sum of its proper divisors (50661639840).

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

19485241440 is a wasteful number, since it uses less digits than its factorization.

19485241440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5799204 (or 5799196 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 19485241440 in words is "nineteen billion, four hundred eighty-five million, two hundred forty-one thousand, four hundred forty".