19285710129 has 81 divisors (see below), whose sum is σ = 34512280257. Its totient is φ = 10345483008.

The previous prime is 19285710121. The next prime is 19285710139. The reversal of 19285710129 is 92101758291.

The square root of 19285710129 is 138873.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 5832225 + 19279877904 = 2415^2 + 138852^2 .

It is not a de Polignac number, because 19285710129 - 2³ = 19285710121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19285710121) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 49577467 + ... + 49577855.

Almost surely, 2^19285710129 is an apocalyptic number.

19285710129 is the 138873-rd square number.

19285710129 is the 69437-th centered octagonal number.

It is an amenable number.

19285710129 is a deficient number, since it is larger than the sum of its proper divisors (15226570128).

19285710129 is an equidigital number, since it uses as much as digits as its factorization.

19285710129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The spelling of 19285710129 in words is "nineteen billion, two hundred eighty-five million, seven hundred ten thousand, one hundred twenty-nine".