19008387240 has 64 divisors (see below), whose sum is σ = 57058214400. Its totient is φ = 5065965312.

The previous prime is 19008387217. The next prime is 19008387269. The reversal of 19008387240 is 4278380091.

It is a super-2 number, since 2×19008387240² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19008387192 and 19008387201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166054 + ... + 256106.

It is an arithmetic number, because the mean of its divisors is an integer number (891534600).

Almost surely, 2^19008387240 is an apocalyptic number.

19008387240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19008387240 is an abundant number, since it is smaller than the sum of its proper divisors (38049827160).

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

19008387240 is a wasteful number, since it uses less digits than its factorization.

19008387240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91826 (or 91822 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 19008387240 in words is "nineteen billion, eight million, three hundred eighty-seven thousand, two hundred forty".