2129627497 has 4 divisors (see below), whose sum is σ = 2134992196. Its totient is φ = 2124262800.

The previous prime is 2129627471. The next prime is 2129627501. The reversal of 2129627497 is 7947269212.

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 898740441 + 1230887056 = 29979^2 + 35084^2 .

It is a cyclic number.

It is not a de Polignac number, because 2129627497 - 2¹⁹ = 2129103209 is a prime.

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 2129627497.

It is not an unprimeable number, because it can be changed into a prime (2129622497) 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, 2681754 + ... + 2682547.

It is an arithmetic number, because the mean of its divisors is an integer number (533748049).

Almost surely, 2^2129627497 is an apocalyptic number.

It is an amenable number.

2129627497 is a deficient number, since it is larger than the sum of its proper divisors (5364699).

2129627497 is an equidigital number, since it uses as much as digits as its factorization.

2129627497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364698.

The product of its digits is 762048, while the sum is 49.

The square root of 2129627497 is about 46147.8872430797. The cubic root of 2129627497 is about 1286.5733420981.

The spelling of 2129627497 in words is "two billion, one hundred twenty-nine million, six hundred twenty-seven thousand, four hundred ninety-seven".