19086780420964 has 27 divisors (see below), whose sum is σ = 33553145500147. Its totient is φ = 9500361485624.

The previous prime is 19086780420931. The next prime is 19086780420977. The reversal of 19086780420964 is 46902408768091.

The square root of 19086780420964 is 4368842.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19086780420896 and 19086780420905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1983449457 + ... + 1983459079.

Almost surely, 2^{19086780420964} is an apocalyptic number.

19086780420964 is the 4368842-nd square number.

It is an amenable number.

19086780420964 is a deficient number, since it is larger than the sum of its proper divisors (14466365079183).

19086780420964 is an frugal number, since it uses more digits than its factorization.

19086780420964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19704 (or 9852 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 64.

The spelling of 19086780420964 in words is "nineteen trillion, eighty-six billion, seven hundred eighty million, four hundred twenty thousand, nine hundred sixty-four".