1797267680 has 72 divisors (see below), whose sum is σ = 4597857432. Its totient is φ = 663596544.

The previous prime is 1797267673. The next prime is 1797267707. The reversal of 1797267680 is 867627971.

It is a super-2 number, since 2×1797267680² = 6460342227145164800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6194 + ... + 60273.

It is an arithmetic number, because the mean of its divisors is an integer number (63859131).

Almost surely, 2^1797267680 is an apocalyptic number.

1797267680 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 1797267680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298928716).

1797267680 is an abundant number, since it is smaller than the sum of its proper divisors (2800589752).

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

1797267680 is a wasteful number, since it uses less digits than its factorization.

1797267680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66508 (or 66487 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 53.

The square root of 1797267680 is about 42394.1939420954. The cubic root of 1797267680 is about 1215.8245865969.

The spelling of 1797267680 in words is "one billion, seven hundred ninety-seven million, two hundred sixty-seven thousand, six hundred eighty".