1997796968 has 32 divisors (see below), whose sum is σ = 3787961760. Its totient is φ = 987700800.

The previous prime is 1997796943. The next prime is 1997796989. The reversal of 1997796968 is 8696977991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958055 + ... + 960137.

It is an arithmetic number, because the mean of its divisors is an integer number (118373805).

Almost surely, 2^1997796968 is an apocalyptic number.

It is an amenable number.

1997796968 is a deficient number, since it is larger than the sum of its proper divisors (1790164792).

1997796968 is a wasteful number, since it uses less digits than its factorization.

1997796968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377 (or 3373 counting only the distinct ones).

The product of its digits is 92588832, while the sum is 71.

The square root of 1997796968 is about 44696.7221169517. The cubic root of 1997796968 is about 1259.4582722025.

The spelling of 1997796968 in words is "one billion, nine hundred ninety-seven million, seven hundred ninety-six thousand, nine hundred sixty-eight".