19128082772 has 6 divisors (see below), whose sum is σ = 33474144858. Its totient is φ = 9564041384.

The previous prime is 19128082759. The next prime is 19128082783. The reversal of 19128082772 is 27728082191.

It can be written as a sum of positive squares in only one way, i.e., 12411296836 + 6716785936 = 111406^2 + 81956^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2391010343 + ... + 2391010350.

It is an arithmetic number, because the mean of its divisors is an integer number (5579024143).

Almost surely, 2^19128082772 is an apocalyptic number.

It is an amenable number.

19128082772 is a deficient number, since it is larger than the sum of its proper divisors (14346062086).

19128082772 is a wasteful number, since it uses less digits than its factorization.

19128082772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782020697 (or 4782020695 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 19128082772 in words is "nineteen billion, one hundred twenty-eight million, eighty-two thousand, seven hundred seventy-two".