19748396290 has 128 divisors (see below), whose sum is σ = 44298067968. Its totient is φ = 6184442880.

The previous prime is 19748396267. The next prime is 19748396293. The reversal of 19748396290 is 9269384791.

It is not an unprimeable number, because it can be changed into a prime (19748396293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8544235 + ... + 8546545.

It is an arithmetic number, because the mean of its divisors is an integer number (346078656).

Almost surely, 2^19748396290 is an apocalyptic number.

19748396290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19748396290 is an abundant number, since it is smaller than the sum of its proper divisors (24549671678).

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

19748396290 is a wasteful number, since it uses less digits than its factorization.

19748396290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 19748396290 in words is "nineteen billion, seven hundred forty-eight million, three hundred ninety-six thousand, two hundred ninety".