2111091398 has 16 divisors (see below), whose sum is σ = 3419238480. Its totient is φ = 971774496.

The previous prime is 2111091397. The next prime is 2111091401. The reversal of 2111091398 is 8931901112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111091391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97265 + ... + 116972.

It is an arithmetic number, because the mean of its divisors is an integer number (213702405).

Almost surely, 2^2111091398 is an apocalyptic number.

2111091398 is a deficient number, since it is larger than the sum of its proper divisors (1308147082).

2111091398 is a wasteful number, since it uses less digits than its factorization.

2111091398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214631.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 2111091398 is about 45946.6146522244. The cubic root of 2111091398 is about 1282.8297174695.

The spelling of 2111091398 in words is "two billion, one hundred eleven million, ninety-one thousand, three hundred ninety-eight".