1997896347 has 10 divisors (see below), whose sum is σ = 2984511948. Its totient is φ = 1331930844.

The previous prime is 1997896283. The next prime is 1997896349. The reversal of 1997896347 is 7436987991.

It is not a de Polignac number, because 1997896347 - 2⁶ = 1997896283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1997896349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12332613 + ... + 12332774.

Almost surely, 2^1997896347 is an apocalyptic number.

1997896347 is a deficient number, since it is larger than the sum of its proper divisors (986615601).

1997896347 is an equidigital number, since it uses as much as digits as its factorization.

1997896347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24665399 (or 24665390 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The square root of 1997896347 is about 44697.8338065728. The cubic root of 1997896347 is about 1259.4791554772.

The spelling of 1997896347 in words is "one billion, nine hundred ninety-seven million, eight hundred ninety-six thousand, three hundred forty-seven".