19886094554 has 8 divisors (see below), whose sum is σ = 29830394880. Its totient is φ = 9942629596.

The previous prime is 19886094533. The next prime is 19886094581. The reversal of 19886094554 is 45549068891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×19886094554² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19886094493 and 19886094502.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 145484 + ... + 246855.

It is an arithmetic number, because the mean of its divisors is an integer number (3728799360).

Almost surely, 2^19886094554 is an apocalyptic number.

19886094554 is a deficient number, since it is larger than the sum of its proper divisors (9944300326).

19886094554 is a wasteful number, since it uses less digits than its factorization.

19886094554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417684.

The product of its (nonzero) digits is 12441600, while the sum is 59.

The spelling of 19886094554 in words is "nineteen billion, eight hundred eighty-six million, ninety-four thousand, five hundred fifty-four".