19798732815 has 16 divisors (see below), whose sum is σ = 31919792256. Its totient is φ = 10478717600.

The previous prime is 19798732799. The next prime is 19798732823. The reversal of 19798732815 is 51823789791.

It is not a de Polignac number, because 19798732815 - 2⁴ = 19798732799 is a prime.

It is a super-3 number, since 3×19798732815³ (a number of 32 digits) contains 333 as substring.

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, 5035881 + ... + 5039810.

It is an arithmetic number, because the mean of its divisors is an integer number (1994987016).

Almost surely, 2^19798732815 is an apocalyptic number.

19798732815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19798732815 is a deficient number, since it is larger than the sum of its proper divisors (12121059441).

19798732815 is a wasteful number, since it uses less digits than its factorization.

19798732815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10075830.

The product of its digits is 7620480, while the sum is 60.

The spelling of 19798732815 in words is "nineteen billion, seven hundred ninety-eight million, seven hundred thirty-two thousand, eight hundred fifteen".