19463394140 has 48 divisors (see below), whose sum is σ = 41582914464. Its totient is φ = 7650720000.

The previous prime is 19463394127. The next prime is 19463394191. The reversal of 19463394140 is 4149336491.

It is a super-3 number, since 3×19463394140³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 19463394091 and 19463394100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546890 + ... + 581390.

It is an arithmetic number, because the mean of its divisors is an integer number (866310718).

Almost surely, 2^19463394140 is an apocalyptic number.

19463394140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19463394140 is an abundant number, since it is smaller than the sum of its proper divisors (22119520324).

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

19463394140 is a wasteful number, since it uses less digits than its factorization.

19463394140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34998 (or 34996 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 19463394140 in words is "nineteen billion, four hundred sixty-three million, three hundred ninety-four thousand, one hundred forty".