2099605954 has 4 divisors (see below), whose sum is σ = 3149408934. Its totient is φ = 1049802976.

The previous prime is 2099605951. The next prime is 2099605979. The reversal of 2099605954 is 4595069902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1117096929 + 982509025 = 33423^2 + 31345^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2099605898 and 2099605907.

It is not an unprimeable number, because it can be changed into a prime (2099605951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524901487 + ... + 524901490.

Almost surely, 2^2099605954 is an apocalyptic number.

2099605954 is a deficient number, since it is larger than the sum of its proper divisors (1049802980).

2099605954 is a wasteful number, since it uses less digits than its factorization.

2099605954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049802979.

The product of its (nonzero) digits is 874800, while the sum is 49.

The square root of 2099605954 is about 45821.4573535151. The cubic root of 2099605954 is about 1280.4990636125.

The spelling of 2099605954 in words is "two billion, ninety-nine million, six hundred five thousand, nine hundred fifty-four".