19730189034 has 64 divisors (see below), whose sum is σ = 45683568000. Its totient is φ = 6304193280.

The previous prime is 19730189033. The next prime is 19730189051. The reversal of 19730189034 is 43098103791.

It is not an unprimeable number, because it can be changed into a prime (19730189033) 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, 172354 + ... + 262994.

It is an arithmetic number, because the mean of its divisors is an integer number (713805750).

Almost surely, 2^19730189034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19730189034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22841784000).

19730189034 is an abundant number, since it is smaller than the sum of its proper divisors (25953378966).

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

19730189034 is a wasteful number, since it uses less digits than its factorization.

19730189034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90820 (or 90814 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 19730189034 in words is "nineteen billion, seven hundred thirty million, one hundred eighty-nine thousand, thirty-four".