2400195649 has 2 divisors, whose sum is σ = 2400195650. Its totient is φ = 2400195648.

The previous prime is 2400195647. The next prime is 2400195709. The reversal of 2400195649 is 9465910042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1962047025 + 438148624 = 44295^2 + 20932^2 .

It is a cyclic number.

It is not a de Polignac number, because 2400195649 - 2¹ = 2400195647 is a prime.

It is a super-3 number, since 3×2400195649³ (a number of 29 digits) contains 333 as substring.

Together with 2400195647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2400195647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1200097824 + 1200097825.

It is an arithmetic number, because the mean of its divisors is an integer number (1200097825).

Almost surely, 2^2400195649 is an apocalyptic number.

It is an amenable number.

2400195649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2400195649 is an equidigital number, since it uses as much as digits as its factorization.

2400195649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 2400195649 is about 48991.7916492141. The cubic root of 2400195649 is about 1338.9022808111.

The spelling of 2400195649 in words is "two billion, four hundred million, one hundred ninety-five thousand, six hundred forty-nine".