19626969236 has 48 divisors (see below), whose sum is σ = 40444325376. Its totient is φ = 8157936384.

The previous prime is 19626969221. The next prime is 19626969281. The reversal of 19626969236 is 63296962691.

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, 294005 + ... + 354531.

It is an arithmetic number, because the mean of its divisors is an integer number (842590112).

Almost surely, 2^19626969236 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 19626969236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20222162688).

19626969236 is an abundant number, since it is smaller than the sum of its proper divisors (20817356140).

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

19626969236 is a wasteful number, since it uses less digits than its factorization.

19626969236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60888 (or 60886 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 59.

The spelling of 19626969236 in words is "nineteen billion, six hundred twenty-six million, nine hundred sixty-nine thousand, two hundred thirty-six".