1799451648 has 66 divisors (see below), whose sum is σ = 5195904194. Its totient is φ = 599814144.

The previous prime is 1799451617. The next prime is 1799451691. The reversal of 1799451648 is 8461549971.

It can be written as a sum of positive squares in only one way, i.e., 1423401984 + 376049664 = 37728^2 + 19392^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1799451594 and 1799451603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88411 + ... + 106842.

Almost surely, 2^1799451648 is an apocalyptic number.

1799451648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1799451648 is an abundant number, since it is smaller than the sum of its proper divisors (3396452546).

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

1799451648 is a wasteful number, since it uses less digits than its factorization.

1799451648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195279 (or 195258 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 1799451648 is about 42419.9439886476. The cubic root of 1799451648 is about 1216.3168611012.

It can be divided in two parts, 17994516 and 48, that added together give a square (17994564 = 4242²).

The spelling of 1799451648 in words is "one billion, seven hundred ninety-nine million, four hundred fifty-one thousand, six hundred forty-eight".