1798679520 has 720 divisors, whose sum is σ = 7397115264. Its totient is φ = 410572800.

The previous prime is 1798679513. The next prime is 1798679527. The reversal of 1798679520 is 259768971.

It is an interprime number because it is at equal distance from previous prime (1798679513) and next prime (1798679527).

It is a tau number, because it is divible by the number of its divisors (720).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798679527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 48612942 + ... + 48612978.

Almost surely, 2^1798679520 is an apocalyptic number.

1798679520 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 1798679520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3698557632).

1798679520 is an abundant number, since it is smaller than the sum of its proper divisors (5598435744).

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

1798679520 is a wasteful number, since it uses less digits than its factorization.

1798679520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 54.

The square root of 1798679520 is about 42410.8420100332. The cubic root of 1798679520 is about 1216.1428661205.

The spelling of 1798679520 in words is "one billion, seven hundred ninety-eight million, six hundred seventy-nine thousand, five hundred twenty".