19418153680 has 40 divisors (see below), whose sum is σ = 45182634912. Its totient is φ = 7761166464.

The previous prime is 19418153639. The next prime is 19418153731. The reversal of 19418153680 is 8635181491.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 19418153680.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 8047 + ... + 197233.

Almost surely, 2^19418153680 is an apocalyptic number.

19418153680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19418153680 is an abundant number, since it is smaller than the sum of its proper divisors (25764481232).

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

19418153680 is a wasteful number, since it uses less digits than its factorization.

19418153680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190483 (or 190477 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 19418153680 in words is "nineteen billion, four hundred eighteen million, one hundred fifty-three thousand, six hundred eighty".