2197078129 has 9 divisors (see below), whose sum is σ = 2319740217. Its totient is φ = 2080598724.

The previous prime is 2197078123. The next prime is 2197078171. The reversal of 2197078129 is 9218707912.

The square root of 2197078129 is 46873.

It is a perfect power (a square), and thus also a powerful number.

2197078129 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 2197078129 - 2²³ = 2188689521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2197078123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 889354 + ... + 891820.

It is an arithmetic number, because the mean of its divisors is an integer number (257748913).

Almost surely, 2^2197078129 is an apocalyptic number.

2197078129 is the 46873-rd square number.

2197078129 is the 23437-th centered octagonal number.

It is an amenable number.

2197078129 is a deficient number, since it is larger than the sum of its proper divisors (122662088).

2197078129 is an frugal number, since it uses more digits than its factorization.

2197078129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972 (or 2486 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 46.

The cubic root of 2197078129 is about 1300.0154098765.

The spelling of 2197078129 in words is "two billion, one hundred ninety-seven million, seventy-eight thousand, one hundred twenty-nine".