898391618 has 8 divisors (see below), whose sum is σ = 1350165648. Its totient is φ = 448336404.

The previous prime is 898391603. The next prime is 898391621. The reversal of 898391618 is 816193898.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 898391618.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428396 + ... + 430487.

It is an arithmetic number, because the mean of its divisors is an integer number (168770706).

Almost surely, 2^898391618 is an apocalyptic number.

898391618 is a deficient number, since it is larger than the sum of its proper divisors (451774030).

898391618 is a wasteful number, since it uses less digits than its factorization.

898391618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859408.

The product of its digits is 746496, while the sum is 53.

The square root of 898391618 is about 29973.1816462650. The cubic root of 898391618 is about 964.9139024907.

The spelling of 898391618 in words is "eight hundred ninety-eight million, three hundred ninety-one thousand, six hundred eighteen".