19570139136 has 392 divisors, whose sum is σ = 61240636980. Its totient is φ = 6242697216.

The previous prime is 19570139131. The next prime is 19570139189. The reversal of 19570139136 is 63193107591.

It is a happy number.

19570139136 is a `hidden beast` number, since 19 + 570 + 1 + 39 + 1 + 36 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17703899136 + 1866240000 = 133056^2 + 43200^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19570139091 and 19570139100.

It is not an unprimeable number, because it can be changed into a prime (19570139131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 173187016 + ... + 173187128.

Almost surely, 2^19570139136 is an apocalyptic number.

19570139136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19570139136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30620318490).

19570139136 is an abundant number, since it is smaller than the sum of its proper divisors (41670497844).

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

19570139136 is an frugal number, since it uses more digits than its factorization.

19570139136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The spelling of 19570139136 in words is "nineteen billion, five hundred seventy million, one hundred thirty-nine thousand, one hundred thirty-six".