2149180829 has 2 divisors, whose sum is σ = 2149180830. Its totient is φ = 2149180828.

The previous prime is 2149180777. The next prime is 2149180837. The reversal of 2149180829 is 9280819412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1416016900 + 733163929 = 37630^2 + 27077^2 .

It is a cyclic number.

It is not a de Polignac number, because 2149180829 - 2²⁰ = 2148132253 is a prime.

It is a super-2 number, since 2×2149180829² = 9237956471482254482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2149180829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149180729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074590414 + 1074590415.

It is an arithmetic number, because the mean of its divisors is an integer number (1074590415).

Almost surely, 2^2149180829 is an apocalyptic number.

It is an amenable number.

2149180829 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149180829 is an equidigital number, since it uses as much as digits as its factorization.

2149180829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 2149180829 is about 46359.2582878544. The cubic root of 2149180829 is about 1290.4989414635.

The spelling of 2149180829 in words is "two billion, one hundred forty-nine million, one hundred eighty thousand, eight hundred twenty-nine".