2278166029 has 2 divisors, whose sum is σ = 2278166030. Its totient is φ = 2278166028.

The previous prime is 2278166027. The next prime is 2278166047. The reversal of 2278166029 is 9206618722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2276721225 + 1444804 = 47715^2 + 1202^2 .

It is a cyclic number.

It is not a de Polignac number, because 2278166029 - 2¹ = 2278166027 is a prime.

Together with 2278166027, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2278166027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139083014 + 1139083015.

It is an arithmetic number, because the mean of its divisors is an integer number (1139083015).

Almost surely, 2^2278166029 is an apocalyptic number.

It is an amenable number.

2278166029 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278166029 is an equidigital number, since it uses as much as digits as its factorization.

2278166029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 2278166029 is about 47730.1375338475. The cubic root of 2278166029 is about 1315.8158813763.

The spelling of 2278166029 in words is "two billion, two hundred seventy-eight million, one hundred sixty-six thousand, twenty-nine".