1798720468 has 6 divisors (see below), whose sum is σ = 3147760826. Its totient is φ = 899360232.

The previous prime is 1798720459. The next prime is 1798720477. The reversal of 1798720468 is 8640278971.

It is an interprime number because it is at equal distance from previous prime (1798720459) and next prime (1798720477).

It can be written as a sum of positive squares in only one way, i.e., 1790813124 + 7907344 = 42318^2 + 2812^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 224840055 + ... + 224840062.

Almost surely, 2^1798720468 is an apocalyptic number.

It is an amenable number.

1798720468 is a deficient number, since it is larger than the sum of its proper divisors (1349040358).

1798720468 is a wasteful number, since it uses less digits than its factorization.

1798720468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449680121 (or 449680119 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The square root of 1798720468 is about 42411.3247612003. The cubic root of 1798720468 is about 1216.1520947870.

The spelling of 1798720468 in words is "one billion, seven hundred ninety-eight million, seven hundred twenty thousand, four hundred sixty-eight".