19834692720 has 80 divisors (see below), whose sum is σ = 62062277760. Its totient is φ = 5239812352.

The previous prime is 19834692701. The next prime is 19834692739. The reversal of 19834692720 is 2729643891.

It is an interprime number because it is at equal distance from previous prime (19834692701) and next prime (19834692739).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360510 + ... + 411869.

It is an arithmetic number, because the mean of its divisors is an integer number (775778472).

Almost surely, 2^19834692720 is an apocalyptic number.

19834692720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19834692720 is an abundant number, since it is smaller than the sum of its proper divisors (42227585040).

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

19834692720 is a wasteful number, since it uses less digits than its factorization.

19834692720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772502 (or 772496 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 19834692720 in words is "nineteen billion, eight hundred thirty-four million, six hundred ninety-two thousand, seven hundred twenty".