19305942528 has 40 divisors (see below), whose sum is σ = 51432241608. Its totient is φ = 6435313664.

The previous prime is 19305942479. The next prime is 19305942529. The reversal of 19305942528 is 82524950391.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19305942529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6282951 + ... + 6286022.

Almost surely, 2^19305942528 is an apocalyptic number.

It is an amenable number.

19305942528 is an abundant number, since it is smaller than the sum of its proper divisors (32126299080).

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

19305942528 is an equidigital number, since it uses as much as digits as its factorization.

19305942528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12568994 (or 12568978 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 19305942528 in words is "nineteen billion, three hundred five million, nine hundred forty-two thousand, five hundred twenty-eight".