19389182890 has 512 divisors, whose sum is σ = 52005888000. Its totient is φ = 5120962560.

The previous prime is 19389182809. The next prime is 19389182899. The reversal of 19389182890 is 9828198391.

It is not an unprimeable number, because it can be changed into a prime (19389182899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 450911209 + ... + 450911251.

It is an arithmetic number, because the mean of its divisors is an integer number (101574000).

Almost surely, 2^19389182890 is an apocalyptic number.

19389182890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19389182890 is an abundant number, since it is smaller than the sum of its proper divisors (32616705110).

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

19389182890 is a wasteful number, since it uses less digits than its factorization.

19389182890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 58.

The spelling of 19389182890 in words is "nineteen billion, three hundred eighty-nine million, one hundred eighty-two thousand, eight hundred ninety".