1797871680 has 224 divisors, whose sum is σ = 6919447680. Its totient is φ = 435824640.

The previous prime is 1797871679. The next prime is 1797871693. The reversal of 1797871680 is 861787971.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85582 + ... + 104498.

Almost surely, 2^1797871680 is an apocalyptic number.

1797871680 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 1797871680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3459723840).

1797871680 is an abundant number, since it is smaller than the sum of its proper divisors (5121576000).

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

1797871680 is a wasteful number, since it uses less digits than its factorization.

1797871680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18954 (or 18938 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 54.

The square root of 1797871680 is about 42401.3169606794. The cubic root of 1797871680 is about 1215.9607703180.

The spelling of 1797871680 in words is "one billion, seven hundred ninety-seven million, eight hundred seventy-one thousand, six hundred eighty".