2102450513 has 4 divisors (see below), whose sum is σ = 2102839860. Its totient is φ = 2102061168.

The previous prime is 2102450479. The next prime is 2102450543. The reversal of 2102450513 is 3150542012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2049553984 + 52896529 = 45272^2 + 7273^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102450513 - 2¹² = 2102446417 is a prime.

It is a super-2 number, since 2×2102450513² = 8840596319227926338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2102450543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186458 + ... + 197411.

It is an arithmetic number, because the mean of its divisors is an integer number (525709965).

Almost surely, 2^2102450513 is an apocalyptic number.

It is an amenable number.

2102450513 is a deficient number, since it is larger than the sum of its proper divisors (389347).

2102450513 is an equidigital number, since it uses as much as digits as its factorization.

2102450513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389346.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2102450513 is about 45852.4864429400. The cubic root of 2102450513 is about 1281.0770786484.

Adding to 2102450513 its reverse (3150542012), we get a palindrome (5252992525).

The spelling of 2102450513 in words is "two billion, one hundred two million, four hundred fifty thousand, five hundred thirteen".