19450342080 has 672 divisors, whose sum is σ = 76047648768. Its totient is φ = 4702924800.

The previous prime is 19450342063. The next prime is 19450342099. The reversal of 19450342080 is 8024305491.

19450342080 is a `hidden beast` number, since 194 + 50 + 342 + 0 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 71772345 + ... + 71772615.

It is an arithmetic number, because the mean of its divisors is an integer number (113166144).

Almost surely, 2^19450342080 is an apocalyptic number.

19450342080 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 19450342080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38023824384).

19450342080 is an abundant number, since it is smaller than the sum of its proper divisors (56597306688).

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

19450342080 is a wasteful number, since it uses less digits than its factorization.

19450342080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 19450342080 in words is "nineteen billion, four hundred fifty million, three hundred forty-two thousand, eighty".