1997038976 has 32 divisors (see below), whose sum is σ = 3980907000. Its totient is φ = 997909504.

The previous prime is 1997038973. The next prime is 1997038997. The reversal of 1997038976 is 6798307991.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997038973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264956 + ... + 272388.

Almost surely, 2^1997038976 is an apocalyptic number.

1997038976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1997038976 is a deficient number, since it is larger than the sum of its proper divisors (1983868024).

1997038976 is an equidigital number, since it uses as much as digits as its factorization.

1997038976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9546 (or 9534 counting only the distinct ones).

The product of its (nonzero) digits is 5143824, while the sum is 59.

The square root of 1997038976 is about 44688.2420330001. The cubic root of 1997038976 is about 1259.2989667154.

The spelling of 1997038976 in words is "one billion, nine hundred ninety-seven million, thirty-eight thousand, nine hundred seventy-six".