2319649 has 2 divisors, whose sum is σ = 2319650. Its totient is φ = 2319648.

The previous prime is 2319631. The next prime is 2319659. The reversal of 2319649 is 9469132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1580049 + 739600 = 1257^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 2319649 - 2⁷ = 2319521 is a prime.

It is not a weakly prime, because it can be changed into another prime (2319659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1159824 + 1159825.

It is an arithmetic number, because the mean of its divisors is an integer number (1159825).

2^2319649 is an apocalyptic number.

It is an amenable number.

2319649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2319649 is an equidigital number, since it uses as much as digits as its factorization.

2319649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 2319649 is about 1523.0393954196. The cubic root of 2319649 is about 132.3754424566.

The spelling of 2319649 in words is "two million, three hundred nineteen thousand, six hundred forty-nine".