19386697896 has 256 divisors, whose sum is σ = 57620160000. Its totient is φ = 6027872256.

The previous prime is 19386697873. The next prime is 19386697903. The reversal of 19386697896 is 69879668391.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54001765 + ... + 54002123.

It is an arithmetic number, because the mean of its divisors is an integer number (225078750).

Almost surely, 2^19386697896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19386697896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28810080000).

19386697896 is an abundant number, since it is smaller than the sum of its proper divisors (38233462104).

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

19386697896 is a wasteful number, since it uses less digits than its factorization.

19386697896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 663 counting only the distinct ones).

The product of its digits is 211631616, while the sum is 72.

It can be divided in two parts, 19386 and 697896, that multiplied together give a square (13529411856 = 116316²).

The spelling of 19386697896 in words is "nineteen billion, three hundred eighty-six million, six hundred ninety-seven thousand, eight hundred ninety-six".