19939469248 has 14 divisors (see below), whose sum is σ = 39567384416. Its totient is φ = 9969734592.

The previous prime is 19939469243. The next prime is 19939469287. The reversal of 19939469248 is 84296493991.

It is a Harshad number since it is a multiple of its sum of digits (64), and also a Moran number because the ratio is a prime number: 311554207 = 19939469248 / (1 + 9 + 9 + 3 + 9 + 4 + 6 + 9 + 2 + 4 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 19939469248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19939469243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155777040 + ... + 155777167.

It is an arithmetic number, because the mean of its divisors is an integer number (2826241744).

Almost surely, 2^19939469248 is an apocalyptic number.

It is an amenable number.

19939469248 is a deficient number, since it is larger than the sum of its proper divisors (19627915168).

19939469248 is an equidigital number, since it uses as much as digits as its factorization.

19939469248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311554219 (or 311554209 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 64.

The spelling of 19939469248 in words is "nineteen billion, nine hundred thirty-nine million, four hundred sixty-nine thousand, two hundred forty-eight".