2102345205 has 16 divisors (see below), whose sum is σ = 3561620544. Its totient is φ = 1055294720.

The previous prime is 2102345159. The next prime is 2102345209. The reversal of 2102345205 is 5025432012.

It is not a de Polignac number, because 2102345205 - 2²¹ = 2100248053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102345209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4121991 + ... + 4122500.

It is an arithmetic number, because the mean of its divisors is an integer number (222601284).

Almost surely, 2^2102345205 is an apocalyptic number.

It is an amenable number.

2102345205 is a deficient number, since it is larger than the sum of its proper divisors (1459275339).

2102345205 is a wasteful number, since it uses less digits than its factorization.

2102345205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8244516.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2102345205 is about 45851.3380938877. The cubic root of 2102345205 is about 1281.0556893352.

Adding to 2102345205 its reverse (5025432012), we get a palindrome (7127777217).

The spelling of 2102345205 in words is "two billion, one hundred two million, three hundred forty-five thousand, two hundred five".