1928665242 has 192 divisors, whose sum is σ = 5198618880. Its totient is φ = 524289024.

The previous prime is 1928665241. The next prime is 1928665247. The reversal of 1928665242 is 2425668291.

It is not an unprimeable number, because it can be changed into a prime (1928665241) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11148268 + ... + 11148440.

It is an arithmetic number, because the mean of its divisors is an integer number (27076140).

Almost surely, 2^1928665242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1928665242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2599309440).

1928665242 is an abundant number, since it is smaller than the sum of its proper divisors (3269953638).

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

1928665242 is a wasteful number, since it uses less digits than its factorization.

1928665242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 327 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 1928665242 is about 43916.5713825658. The cubic root of 1928665242 is about 1244.7599827631.

The spelling of 1928665242 in words is "one billion, nine hundred twenty-eight million, six hundred sixty-five thousand, two hundred forty-two".