2101854955 has 16 divisors (see below), whose sum is σ = 2719735200. Its totient is φ = 1554128640.

The previous prime is 2101854949. The next prime is 2101854983. The reversal of 2101854955 is 5594581012.

It is a de Polignac number, because none of the positive numbers 2^k-2101854955 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265920 + ... + 273709.

It is an arithmetic number, because the mean of its divisors is an integer number (169983450).

Almost surely, 2^2101854955 is an apocalyptic number.

2101854955 is a deficient number, since it is larger than the sum of its proper divisors (617880245).

2101854955 is a wasteful number, since it uses less digits than its factorization.

2101854955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539694.

The product of its (nonzero) digits is 72000, while the sum is 40.

The square root of 2101854955 is about 45845.9917004748. The cubic root of 2101854955 is about 1280.9561042981.

The spelling of 2101854955 in words is "two billion, one hundred one million, eight hundred fifty-four thousand, nine hundred fifty-five".