2154105100 has 36 divisors (see below), whose sum is σ = 5342182384. Its totient is φ = 738550080.

The previous prime is 2154105049. The next prime is 2154105127. The reversal of 2154105100 is 15014512.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1537947 + ... + 1539346.

Almost surely, 2^2154105100 is an apocalyptic number.

2154105100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154105100 is an abundant number, since it is smaller than the sum of its proper divisors (3188077284).

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

2154105100 is a wasteful number, since it uses less digits than its factorization.

2154105100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077314 (or 3077307 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 2154105100 is about 46412.3377993395. The cubic root of 2154105100 is about 1291.4838003117.

Adding to 2154105100 its reverse (15014512), we get a palindrome (2169119612).

The spelling of 2154105100 in words is "two billion, one hundred fifty-four million, one hundred five thousand, one hundred".