2100908355 has 32 divisors (see below), whose sum is σ = 4137176064. Its totient is φ = 886536576.

The previous prime is 2100908339. The next prime is 2100908357. The reversal of 2100908355 is 5538090012.

It is not a de Polignac number, because 2100908355 - 2⁴ = 2100908339 is a prime.

It is a super-2 number, since 2×2100908355² = 8827631832217612050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2100908357) 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, 768199 + ... + 770928.

It is an arithmetic number, because the mean of its divisors is an integer number (129286752).

Almost surely, 2^2100908355 is an apocalyptic number.

2100908355 is a deficient number, since it is larger than the sum of its proper divisors (2036267709).

2100908355 is a wasteful number, since it uses less digits than its factorization.

2100908355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539155.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 2100908355 is about 45835.6668436274. Note that the first 3 decimals coincide. The cubic root of 2100908355 is about 1280.7637765447.

Adding to 2100908355 its reverse (5538090012), we get a palindrome (7638998367).

The spelling of 2100908355 in words is "two billion, one hundred million, nine hundred eight thousand, three hundred fifty-five".