2078149 has 2 divisors, whose sum is σ = 2078150. Its totient is φ = 2078148.

The previous prime is 2078123. The next prime is 2078159. The reversal of 2078149 is 9418702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2030625 + 47524 = 1425^2 + 218^2 .

It is a cyclic number.

It is not a de Polignac number, because 2078149 - 2⁵ = 2078117 is a prime.

It is a Chen prime.

2078149 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2078149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2078159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039074 + 1039075.

It is an arithmetic number, because the mean of its divisors is an integer number (1039075).

2^2078149 is an apocalyptic number.

It is an amenable number.

2078149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078149 is an equidigital number, since it uses as much as digits as its factorization.

2078149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 2078149 is about 1441.5786485655. The cubic root of 2078149 is about 127.6122093053.

The spelling of 2078149 in words is "two million, seventy-eight thousand, one hundred forty-nine".