1798513385 has 16 divisors (see below), whose sum is σ = 2307367296. Its totient is φ = 1341020928.

The previous prime is 1798513331. The next prime is 1798513397. The reversal of 1798513385 is 5833158971.

It is not a de Polignac number, because 1798513385 - 2¹⁸ = 1798251241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93959 + ... + 111468.

It is an arithmetic number, because the mean of its divisors is an integer number (144210456).

Almost surely, 2^1798513385 is an apocalyptic number.

It is an amenable number.

1798513385 is a deficient number, since it is larger than the sum of its proper divisors (508853911).

1798513385 is a wasteful number, since it uses less digits than its factorization.

1798513385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205552.

The product of its digits is 907200, while the sum is 50.

The square root of 1798513385 is about 42408.8833264919. The cubic root of 1798513385 is about 1216.1054219633.

The spelling of 1798513385 in words is "one billion, seven hundred ninety-eight million, five hundred thirteen thousand, three hundred eighty-five".