19458382020 has 192 divisors, whose sum is σ = 68252792832. Its totient is φ = 4023936000.

The previous prime is 19458381979. The next prime is 19458382043. The reversal of 19458382020 is 2028385491.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 63 ways as a sum of consecutive naturals, for example, 964840 + ... + 984800.

It is an arithmetic number, because the mean of its divisors is an integer number (355483296).

Almost surely, 2^19458382020 is an apocalyptic number.

19458382020 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 19458382020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34126396416).

19458382020 is an abundant number, since it is smaller than the sum of its proper divisors (48794410812).

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

19458382020 is a wasteful number, since it uses less digits than its factorization.

19458382020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20202 (or 20200 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 19458382020 in words is "nineteen billion, four hundred fifty-eight million, three hundred eighty-two thousand, twenty".