19490112928 has 288 divisors, whose sum is σ = 47554081344. Its totient is φ = 7787520000.

The previous prime is 19490112907. The next prime is 19490112949. The reversal of 19490112928 is 82921109491.

It is an interprime number because it is at equal distance from previous prime (19490112907) and next prime (19490112949).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148779423 + ... + 148779553.

It is an arithmetic number, because the mean of its divisors is an integer number (165118338).

Almost surely, 2^19490112928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19490112928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23777040672).

19490112928 is an abundant number, since it is smaller than the sum of its proper divisors (28063968416).

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

19490112928 is a wasteful number, since it uses less digits than its factorization.

19490112928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 46.

The spelling of 19490112928 in words is "nineteen billion, four hundred ninety million, one hundred twelve thousand, nine hundred twenty-eight".