19318199040 has 432 divisors, whose sum is σ = 77962248000. Its totient is φ = 4414685184.

The previous prime is 19318199029. The next prime is 19318199057. The reversal of 19318199040 is 4099181391.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3948916 + ... + 3953804.

Almost surely, 2^19318199040 is an apocalyptic number.

19318199040 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 19318199040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38981124000).

19318199040 is an abundant number, since it is smaller than the sum of its proper divisors (58644048960).

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

19318199040 is an equidigital number, since it uses as much as digits as its factorization.

19318199040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4937 (or 4906 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The spelling of 19318199040 in words is "nineteen billion, three hundred eighteen million, one hundred ninety-nine thousand, forty".