19508893040 has 160 divisors (see below), whose sum is σ = 55956168576. Its totient is φ = 6159790080.

The previous prime is 19508893009. The next prime is 19508893069. The reversal of 19508893040 is 4039880591.

It is a congruent number.

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, 3353174 + ... + 3358986.

Almost surely, 2^19508893040 is an apocalyptic number.

19508893040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19508893040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27978084288).

19508893040 is an abundant number, since it is smaller than the sum of its proper divisors (36447275536).

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

19508893040 is a wasteful number, since it uses less digits than its factorization.

19508893040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6307 (or 6301 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 19508893040 in words is "nineteen billion, five hundred eight million, eight hundred ninety-three thousand, forty".