19030778240 has 64 divisors (see below), whose sum is σ = 45514109520. Its totient is φ = 7609190400.

The previous prime is 19030778219. The next prime is 19030778251. The reversal of 19030778240 is 4287703091.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

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, 2153030 + ... + 2161850.

Almost surely, 2^19030778240 is an apocalyptic number.

19030778240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19030778240 is an abundant number, since it is smaller than the sum of its proper divisors (26483331280).

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

19030778240 is an equidigital number, since it uses as much as digits as its factorization.

19030778240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12211 (or 12199 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 19030778240 in words is "nineteen billion, thirty million, seven hundred seventy-eight thousand, two hundred forty".