19303970128 has 20 divisors (see below), whose sum is σ = 37415858580. Its totient is φ = 9648264704.

The previous prime is 19303970123. The next prime is 19303970167. The reversal of 19303970128 is 82107930391.

It can be written as a sum of positive squares in 2 ways, for example, as 4148390464 + 15155579664 = 64408^2 + 123108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19303970123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189475 + ... + 272962.

It is an arithmetic number, because the mean of its divisors is an integer number (1870792929).

Almost surely, 2^19303970128 is an apocalyptic number.

It is an amenable number.

19303970128 is a deficient number, since it is larger than the sum of its proper divisors (18111888452).

19303970128 is a wasteful number, since it uses less digits than its factorization.

19303970128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465054 (or 465048 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 19303970128 in words is "nineteen billion, three hundred three million, nine hundred seventy thousand, one hundred twenty-eight".