2123529413 has 4 divisors (see below), whose sum is σ = 2127455148. Its totient is φ = 2119603680.

The previous prime is 2123529403. The next prime is 2123529469. The reversal of 2123529413 is 3149253212.

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 1485562849 + 637966564 = 38543^2 + 25258^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123529413 - 2¹⁰ = 2123528389 is a prime.

It is a super-2 number, since 2×2123529413² = 9018754335752249138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2123529413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123529403) 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, 1962056 + ... + 1963137.

It is an arithmetic number, because the mean of its divisors is an integer number (531863787).

Almost surely, 2^2123529413 is an apocalyptic number.

It is an amenable number.

2123529413 is a deficient number, since it is larger than the sum of its proper divisors (3925735).

2123529413 is an equidigital number, since it uses as much as digits as its factorization.

2123529413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925734.

The product of its digits is 12960, while the sum is 32.

The square root of 2123529413 is about 46081.7687703065. The cubic root of 2123529413 is about 1285.3441548675.

The spelling of 2123529413 in words is "two billion, one hundred twenty-three million, five hundred twenty-nine thousand, four hundred thirteen".