19613794200 has 1152 divisors, whose sum is σ = 87489400320. Its totient is φ = 3509452800.

The previous prime is 19613794169. The next prime is 19613794219. The reversal of 19613794200 is 249731691.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 173573344 + ... + 173573456.

It is an arithmetic number, because the mean of its divisors is an integer number (75945660).

Almost surely, 2^19613794200 is an apocalyptic number.

19613794200 is a gapful number since it is divisible by the number (10) 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 19613794200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43744700160).

19613794200 is an abundant number, since it is smaller than the sum of its proper divisors (67875606120).

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

19613794200 is a wasteful number, since it uses less digits than its factorization.

19613794200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 19613794200 in words is "nineteen billion, six hundred thirteen million, seven hundred ninety-four thousand, two hundred".