19520001796 has 9 divisors (see below), whose sum is σ = 34160492149. Its totient is φ = 9759861184.

The previous prime is 19520001791. The next prime is 19520001797. The reversal of 19520001796 is 69710002591.

The square root of 19520001796 is 139714.

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

It can be written as a sum of positive squares in only one way, i.e., 6900624900 + 12619376896 = 83070^2 + 112336^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19520001791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 244500 + ... + 314356.

Almost surely, 2^19520001796 is an apocalyptic number.

19520001796 is the 139714-th square number.

It is an amenable number.

19520001796 is a deficient number, since it is larger than the sum of its proper divisors (14640490353).

19520001796 is an frugal number, since it uses more digits than its factorization.

19520001796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139718 (or 69859 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 19520001796 in words is "nineteen billion, five hundred twenty million, one thousand, seven hundred ninety-six".