1978560342 has 48 divisors (see below), whose sum is σ = 4679588160. Its totient is φ = 599180400.

The previous prime is 1978560323. The next prime is 1978560347. The reversal of 1978560342 is 2430658791.

1978560342 is a `hidden beast` number, since 19 + 78 + 560 + 3 + 4 + 2 = 666.

1978560342 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

1978560342 is strictly pandigital in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1978560347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 538909 + ... + 542567.

It is an arithmetic number, because the mean of its divisors is an integer number (97491420).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1978560342 = 3957120684, but 3⋅1978560342 = 5935681026 is not.

Almost surely, 2^1978560342 is an apocalyptic number.

1978560342 is an abundant number, since it is smaller than the sum of its proper divisors (2701027818).

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

1978560342 is a wasteful number, since it uses less digits than its factorization.

1978560342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6409 (or 6406 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1978560342 is about 44481.0110271788. The cubic root of 1978560342 is about 1255.4028202748.

The spelling of 1978560342 in words is "one billion, nine hundred seventy-eight million, five hundred sixty thousand, three hundred forty-two".