19400602044 has 24 divisors (see below), whose sum is σ = 45323098240. Its totient is φ = 6459006384.

The previous prime is 19400602043. The next prime is 19400602093. The reversal of 19400602044 is 44020600491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19400602043) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 972334 + ... + 992085.

Almost surely, 2^19400602044 is an apocalyptic number.

It is an amenable number.

19400602044 is an abundant number, since it is smaller than the sum of its proper divisors (25922496196).

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

19400602044 is a wasteful number, since it uses less digits than its factorization.

19400602044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965249 (or 1965247 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 19400602044 in words is "nineteen billion, four hundred million, six hundred two thousand, forty-four".