19347226990 has 64 divisors (see below), whose sum is σ = 43199299584. Its totient is φ = 6074828928.

The previous prime is 19347226979. The next prime is 19347226991. The reversal of 19347226990 is 9962274391.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19347226991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31867 + ... + 199273.

It is an arithmetic number, because the mean of its divisors is an integer number (674989056).

Almost surely, 2^19347226990 is an apocalyptic number.

19347226990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19347226990 is an abundant number, since it is smaller than the sum of its proper divisors (23852072594).

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

19347226990 is a wasteful number, since it uses less digits than its factorization.

19347226990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167561.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 19347226990 in words is "nineteen billion, three hundred forty-seven million, two hundred twenty-six thousand, nine hundred ninety".