2191019098 has 16 divisors (see below), whose sum is σ = 3319341120. Its totient is φ = 1084585216.

The previous prime is 2191019071. The next prime is 2191019179. The reversal of 2191019098 is 8909101912.

It is a self number, because there is not a number n which added to its sum of digits gives 2191019098.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587283 + ... + 591001.

It is an arithmetic number, because the mean of its divisors is an integer number (207458820).

Almost surely, 2^2191019098 is an apocalyptic number.

2191019098 is a deficient number, since it is larger than the sum of its proper divisors (1128322022).

2191019098 is a wasteful number, since it uses less digits than its factorization.

2191019098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6581.

The product of its (nonzero) digits is 11664, while the sum is 40.

The square root of 2191019098 is about 46808.3229564999. The cubic root of 2191019098 is about 1298.8192628203.

The spelling of 2191019098 in words is "two billion, one hundred ninety-one million, nineteen thousand, ninety-eight".