19385419400 has 24 divisors (see below), whose sum is σ = 45071100570. Its totient is φ = 7754167680.

The previous prime is 19385419393. The next prime is 19385419433. The reversal of 19385419400 is 491458391.

It can be written as a sum of positive squares in 3 ways, for example, as 12217765156 + 7167654244 = 110534^2 + 84662^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 48463349 + ... + 48463748.

Almost surely, 2^19385419400 is an apocalyptic number.

19385419400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19385419400 is an abundant number, since it is smaller than the sum of its proper divisors (25685681170).

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

19385419400 is a wasteful number, since it uses less digits than its factorization.

19385419400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96927113 (or 96927104 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 19385419400 in words is "nineteen billion, three hundred eighty-five million, four hundred nineteen thousand, four hundred".