1997110080 has 392 divisors, whose sum is σ = 8155423872. Its totient is φ = 456109056.

The previous prime is 1997110019. The next prime is 1997110091. The reversal of 1997110080 is 800117991.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1632349 + ... + 1633571.

Almost surely, 2^1997110080 is an apocalyptic number.

1997110080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1997110080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4077711936).

1997110080 is an abundant number, since it is smaller than the sum of its proper divisors (6158313792).

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

1997110080 is an equidigital number, since it uses as much as digits as its factorization.

1997110080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The square root of 1997110080 is about 44689.0375819395. The cubic root of 1997110080 is about 1259.3139121976.

The spelling of 1997110080 in words is "one billion, nine hundred ninety-seven million, one hundred ten thousand, eighty".