19450180240 has 40 divisors (see below), whose sum is σ = 46324644408. Its totient is φ = 7590312960.

The previous prime is 19450180229. The next prime is 19450180247. The reversal of 19450180240 is 4208105491.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 485585296 + 18964594944 = 22036^2 + 137712^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×19450180240² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19450180196 and 19450180205.

It is not an unprimeable number, because it can be changed into a prime (19450180247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2961687 + ... + 2968246.

Almost surely, 2^19450180240 is an apocalyptic number.

19450180240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19450180240 is an abundant number, since it is smaller than the sum of its proper divisors (26874464168).

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

19450180240 is a wasteful number, since it uses less digits than its factorization.

19450180240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5929987 (or 5929981 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 19450180240 in words is "nineteen billion, four hundred fifty million, one hundred eighty thousand, two hundred forty".