19464903612 has 576 divisors, whose sum is σ = 66838947840. Its totient is φ = 4849891200.

The previous prime is 19464903589. The next prime is 19464903629. The reversal of 19464903612 is 21630946491.

It is a congruent number.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 274153537 + ... + 274153607.

It is an arithmetic number, because the mean of its divisors is an integer number (116039840).

Almost surely, 2^19464903612 is an apocalyptic number.

19464903612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19464903612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33419473920).

19464903612 is an abundant number, since it is smaller than the sum of its proper divisors (47374044228).

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

19464903612 is a wasteful number, since it uses less digits than its factorization.

19464903612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 19464903612 in words is "nineteen billion, four hundred sixty-four million, nine hundred three thousand, six hundred twelve".