19485659700 has 504 divisors, whose sum is σ = 70727374200. Its totient is φ = 4624542720.

The previous prime is 19485659629. The next prime is 19485659701. The reversal of 19485659700 is 795658491.

19485659700 is a `hidden beast` number, since 1 + 9 + 4 + 8 + 565 + 9 + 70 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 12398377104 + 7087282596 = 111348^2 + 84186^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19485659701) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 27482946 + ... + 27483654.

Almost surely, 2^19485659700 is an apocalyptic number.

19485659700 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 19485659700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35363687100).

19485659700 is an abundant number, since it is smaller than the sum of its proper divisors (51241714500).

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

19485659700 is a wasteful number, since it uses less digits than its factorization.

19485659700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 19485659700 in words is "nineteen billion, four hundred eighty-five million, six hundred fifty-nine thousand, seven hundred".