1799978112 has 160 divisors (see below), whose sum is σ = 5402833920. Its totient is φ = 594832896.

The previous prime is 1799978101. The next prime is 1799978171. The reversal of 1799978112 is 2118799971.

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 19 ways as a sum of consecutive naturals, for example, 1316053 + ... + 1317419.

It is an arithmetic number, because the mean of its divisors is an integer number (33767712).

Almost surely, 2^1799978112 is an apocalyptic number.

1799978112 is a gapful number since it is divisible by the number (12) 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 1799978112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2701416960).

1799978112 is an abundant number, since it is smaller than the sum of its proper divisors (3602855808).

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

1799978112 is a wasteful number, since it uses less digits than its factorization.

1799978112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1499 counting only the distinct ones).

The product of its digits is 571536, while the sum is 54.

The square root of 1799978112 is about 42426.1489178549. The cubic root of 1799978112 is about 1216.4354684563.

The spelling of 1799978112 in words is "one billion, seven hundred ninety-nine million, nine hundred seventy-eight thousand, one hundred twelve".