19390906080 has 288 divisors, whose sum is σ = 81442355904. Its totient is φ = 4091240448.

The previous prime is 19390906037. The next prime is 19390906111. The reversal of 19390906080 is 8060909391.

19390906080 is a `hidden beast` number, since 1 + 9 + 39 + 0 + 9 + 0 + 608 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57052 + ... + 205028.

It is an arithmetic number, because the mean of its divisors is an integer number (282785958).

Almost surely, 2^19390906080 is an apocalyptic number.

19390906080 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 19390906080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40721177952).

19390906080 is an abundant number, since it is smaller than the sum of its proper divisors (62051449824).

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

19390906080 is a wasteful number, since it uses less digits than its factorization.

19390906080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148018 (or 148007 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The spelling of 19390906080 in words is "nineteen billion, three hundred ninety million, nine hundred six thousand, eighty".