2129697573 has 4 divisors (see below), whose sum is σ = 2839596768. Its totient is φ = 1419798380.

The previous prime is 2129697533. The next prime is 2129697587. The reversal of 2129697573 is 3757969212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2129697573 - 2⁶ = 2129697509 is a prime.

It is a super-2 number, since 2×2129697573² = 9071223504884180658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129697503) 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, 354949593 + ... + 354949598.

It is an arithmetic number, because the mean of its divisors is an integer number (709899192).

Almost surely, 2^2129697573 is an apocalyptic number.

It is an amenable number.

2129697573 is a deficient number, since it is larger than the sum of its proper divisors (709899195).

2129697573 is an equidigital number, since it uses as much as digits as its factorization.

2129697573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709899194.

The product of its digits is 1428840, while the sum is 51.

The square root of 2129697573 is about 46148.6464915278. The cubic root of 2129697573 is about 1286.5874536308.

The spelling of 2129697573 in words is "two billion, one hundred twenty-nine million, six hundred ninety-seven thousand, five hundred seventy-three".