19398480146 has 4 divisors (see below), whose sum is σ = 29097720222. Its totient is φ = 9699240072.

The previous prime is 19398480137. The next prime is 19398480193. The reversal of 19398480146 is 64108489391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64108489391 = 14557 ⋅4403963.

It can be written as a sum of positive squares in only one way, i.e., 11201893921 + 8196586225 = 105839^2 + 90535^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4849620035 + ... + 4849620038.

Almost surely, 2^19398480146 is an apocalyptic number.

19398480146 is a deficient number, since it is larger than the sum of its proper divisors (9699240076).

19398480146 is an equidigital number, since it uses as much as digits as its factorization.

19398480146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9699240075.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 19398480146 in words is "nineteen billion, three hundred ninety-eight million, four hundred eighty thousand, one hundred forty-six".