19328228736 has 64 divisors (see below), whose sum is σ = 51795065520. Its totient is φ = 6385713152.

The previous prime is 19328228681. The next prime is 19328228741. The reversal of 19328228736 is 63782282391.

19328228736 = 46338² + 46339² + ... + 46346².

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×19328228736² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179325 + ... + 266108.

Almost surely, 2^19328228736 is an apocalyptic number.

19328228736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19328228736 is an abundant number, since it is smaller than the sum of its proper divisors (32466836784).

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

19328228736 is a wasteful number, since it uses less digits than its factorization.

19328228736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445563 (or 445551 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The spelling of 19328228736 in words is "nineteen billion, three hundred twenty-eight million, two hundred twenty-eight thousand, seven hundred thirty-six".