2111541404 has 24 divisors (see below), whose sum is σ = 4406696448. Its totient is φ = 865600560.

The previous prime is 2111541379. The next prime is 2111541433. The reversal of 2111541404 is 4041451112.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 2111541404.

It is a congruent number.

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, 1638752 + ... + 1640039.

It is an arithmetic number, because the mean of its divisors is an integer number (183612352).

Almost surely, 2^2111541404 is an apocalyptic number.

It is an amenable number.

2111541404 is an abundant number, since it is smaller than the sum of its proper divisors (2295155044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111541404 is a wasteful number, since it uses less digits than its factorization.

2111541404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278825 (or 3278823 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 2111541404 is about 45951.5114441299. The cubic root of 2111541404 is about 1282.9208614874.

Adding to 2111541404 its reverse (4041451112), we get a palindrome (6152992516).

The spelling of 2111541404 in words is "two billion, one hundred eleven million, five hundred forty-one thousand, four hundred four".