2111453544 has 128 divisors (see below), whose sum is σ = 5745162240. Its totient is φ = 644827392.

The previous prime is 2111453543. The next prime is 2111453551. The reversal of 2111453544 is 4453541112.

It is not an unprimeable number, because it can be changed into a prime (2111453543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1367637 + ... + 1369179.

It is an arithmetic number, because the mean of its divisors is an integer number (44884080).

Almost surely, 2^2111453544 is an apocalyptic number.

2111453544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111453544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872581120).

2111453544 is an abundant number, since it is smaller than the sum of its proper divisors (3633708696).

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

2111453544 is a wasteful number, since it uses less digits than its factorization.

2111453544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679 (or 1675 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 2111453544 is about 45950.5554264581. Note that the first 3 decimals coincide. The cubic root of 2111453544 is about 1282.9030673789.

Adding to 2111453544 its reverse (4453541112), we get a palindrome (6564994656).

The spelling of 2111453544 in words is "two billion, one hundred eleven million, four hundred fifty-three thousand, five hundred forty-four".