2198510998 has 4 divisors (see below), whose sum is σ = 3297766500. Its totient is φ = 1099255498.

The previous prime is 2198510981. The next prime is 2198511011. The reversal of 2198510998 is 8990158912.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549627748 + ... + 549627751.

It is an arithmetic number, because the mean of its divisors is an integer number (824441625).

Almost surely, 2^2198510998 is an apocalyptic number.

2198510998 is a deficient number, since it is larger than the sum of its proper divisors (1099255502).

2198510998 is a wasteful number, since it uses less digits than its factorization.

2198510998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099255501.

The product of its (nonzero) digits is 466560, while the sum is 52.

The square root of 2198510998 is about 46888.2820969163. The cubic root of 2198510998 is about 1300.2979589218.

The spelling of 2198510998 in words is "two billion, one hundred ninety-eight million, five hundred ten thousand, nine hundred ninety-eight".