19936929040 has 160 divisors (see below), whose sum is σ = 54553651200. Its totient is φ = 6632865792.

The previous prime is 19936929031. The next prime is 19936929049. The reversal of 19936929040 is 4092963991.

It is an interprime number because it is at equal distance from previous prime (19936929031) and next prime (19936929049).

It is a super-2 number, since 2×19936929040² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19936929049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9302209 + ... + 9304351.

It is an arithmetic number, because the mean of its divisors is an integer number (340960320).

Almost surely, 2^19936929040 is an apocalyptic number.

19936929040 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 19936929040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27276825600).

19936929040 is an abundant number, since it is smaller than the sum of its proper divisors (34616722160).

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

19936929040 is a wasteful number, since it uses less digits than its factorization.

19936929040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649 (or 2643 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 52.

The spelling of 19936929040 in words is "nineteen billion, nine hundred thirty-six million, nine hundred twenty-nine thousand, forty".