2164550429 has 2 divisors, whose sum is σ = 2164550430. Its totient is φ = 2164550428.

The previous prime is 2164550419. The next prime is 2164550461. The reversal of 2164550429 is 9240554612.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1982920900 + 181629529 = 44530^2 + 13477^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164550429 - 2²⁴ = 2147773213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2164550392 and 2164550401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164550419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082275214 + 1082275215.

It is an arithmetic number, because the mean of its divisors is an integer number (1082275215).

Almost surely, 2^2164550429 is an apocalyptic number.

It is an amenable number.

2164550429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164550429 is an equidigital number, since it uses as much as digits as its factorization.

2164550429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 2164550429 is about 46524.7292200610. The cubic root of 2164550429 is about 1293.5679182587.

The spelling of 2164550429 in words is "two billion, one hundred sixty-four million, five hundred fifty thousand, four hundred twenty-nine".