1975216768 has 32 divisors (see below), whose sum is σ = 4497147360. Its totient is φ = 846521088.

The previous prime is 1975216717. The next prime is 1975216777. The reversal of 1975216768 is 8676125791.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101346 + ... + 1103137.

It is an arithmetic number, because the mean of its divisors is an integer number (140535855).

Almost surely, 2^1975216768 is an apocalyptic number.

It is an amenable number.

1975216768 is an abundant number, since it is smaller than the sum of its proper divisors (2521930592).

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

1975216768 is an equidigital number, since it uses as much as digits as its factorization.

1975216768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204504 (or 2204492 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 52.

The square root of 1975216768 is about 44443.4108502037. The cubic root of 1975216768 is about 1254.6952521109.

The spelling of 1975216768 in words is "one billion, nine hundred seventy-five million, two hundred sixteen thousand, seven hundred sixty-eight".