19702003920 has 160 divisors (see below), whose sum is σ = 62151260160. Its totient is φ = 5161812480.

The previous prime is 19702003913. The next prime is 19702003927. The reversal of 19702003920 is 2930020791.

It is an interprime number because it is at equal distance from previous prime (19702003913) and next prime (19702003927).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19702003927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7057725 + ... + 7060515.

It is an arithmetic number, because the mean of its divisors is an integer number (388445376).

Almost surely, 2^19702003920 is an apocalyptic number.

19702003920 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 19702003920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31075630080).

19702003920 is an abundant number, since it is smaller than the sum of its proper divisors (42449256240).

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

19702003920 is a wasteful number, since it uses less digits than its factorization.

19702003920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313 (or 3307 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The spelling of 19702003920 in words is "nineteen billion, seven hundred two million, three thousand, nine hundred twenty".